About DBpedia - DBpedia Association

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method and URL var method = (init && init.method) ? init.method.toUpperCase() : 'GET'; var url = input; gdpr_compliant_recaptcha.originalFetches.forEach(overrideFunction => { overrideFunction.apply(this, arguments); }); // Bind the original fetch function to the window object var originalFetchBound = gdpr_compliant_recaptcha.originalFetch.bind(window); try{ // Call the original fetch method //return gdpr_compliant_recaptcha.originalFetch.apply(this, arguments).then(function (response) { return originalFetchBound(input, init).then(function (response) { var clonedResponse = response.clone(); // Check for an error response if (response.ok && method === 'POST') { // Parse the response JSON return response.text().then(function (responseData) { var data = responseData; if (gdpr_compliant_recaptcha.isValidJson(responseData)) { data = JSON.parse(responseData); } // Check if the gdpr_error_message parameter is present if (data.data && data.data.gdpr_error_message) { gdpr_compliant_recaptcha.displayErrorMessage(data.data.gdpr_error_message); gdpr_compliant_recaptcha.abortController.abort(); return Promise.reject(new Error('Request aborted')); } // Return the original response for non-error cases return clonedResponse; }); } return clonedResponse; }); } catch (error) { // Return a resolved promise in case of an error return Promise.resolve(); } }, // Full implementation of SHA265 hashing algorithm. sha256 : function( ascii ) { function rightRotate( value, amount ) { return ( value>>>amount ) | ( value<<(32 - amount ) ); } var mathPow = Math.pow; var maxWord = mathPow( 2, 32 ); var lengthProperty = 'length'; // Used as a counter across the whole file var i, j; var result = ''; var words = []; var asciiBitLength = ascii[ lengthProperty ] * 8; // Caching results is optional - remove/add slash from front of this line to toggle. // Initial hash value: first 32 bits of the fractional parts of the square roots of the first 8 primes // (we actually calculate the first 64, but extra values are just ignored). var hash = this.sha256.h = this.sha256.h || []; // Round constants: First 32 bits of the fractional parts of the cube roots of the first 64 primes. var k = this.sha256.k = this.sha256.k || []; var primeCounter = k[ lengthProperty ]; var isComposite = {}; for ( var candidate = 2; primeCounter < 64; candidate++ ) { if ( ! isComposite[ candidate ] ) { for ( i = 0; i < 313; i += candidate ) { isComposite[ i ] = candidate; } hash[ primeCounter ] = ( mathPow( candidate, 0.5 ) * maxWord ) | 0; k[ primeCounter++ ] = ( mathPow( candidate, 1 / 3 ) * maxWord ) | 0; } } // Append Ƈ' bit (plus zero padding). ascii += '\x80'; // More zero padding while ( ascii[ lengthProperty ] % 64 - 56 ){ ascii += '\x00'; } for ( i = 0, max = ascii[ lengthProperty ]; i < max; i++ ) { j = ascii.charCodeAt( i ); // ASCII check: only accept characters in range 0-255 if ( j >> 8 ) { return; } words[ i >> 2 ] |= j << ( ( 3 - i ) % 4 ) * 8; } words[ words[ lengthProperty ] ] = ( ( asciiBitLength / maxWord ) | 0 ); words[ words[ lengthProperty ] ] = ( asciiBitLength ); // process each chunk for ( j = 0, max = words[ lengthProperty ]; j < max; ) { // The message is expanded into 64 words as part of the iteration var w = words.slice( j, j += 16 ); var oldHash = hash; // This is now the undefinedworking hash, often labelled as variables a...g // (we have to truncate as well, otherwise extra entries at the end accumulate. hash = hash.slice( 0, 8 ); for ( i = 0; i < 64; i++ ) { var i2 = i + j; // Expand the message into 64 words var w15 = w[ i - 15 ], w2 = w[ i - 2 ]; // Iterate var a = hash[ 0 ], e = hash[ 4 ]; var temp1 = hash[ 7 ] + ( rightRotate( e, 6 ) ^ rightRotate( e, 11 ) ^ rightRotate( e, 25 ) ) // S1 + ( ( e&hash[ 5 ] ) ^ ( ( ~e ) &hash[ 6 ] ) ) // ch + k[i] // Expand the message schedule if needed + ( w[ i ] = ( i < 16 ) ? w[ i ] : ( w[ i - 16 ] + ( rightRotate( w15, 7 ) ^ rightRotate( w15, 18 ) ^ ( w15 >>> 3 ) ) // s0 + w[ i - 7 ] + ( rightRotate( w2, 17 ) ^ rightRotate( w2, 19 ) ^ ( w2 >>> 10 ) ) // s1 ) | 0 ); // This is only used once, so *could* be moved below, but it only saves 4 bytes and makes things unreadble: var temp2 = ( rightRotate( a, 2 ) ^ rightRotate( a, 13 ) ^ rightRotate( a, 22 ) ) // S0 + ( ( a&hash[ 1 ] )^( a&hash[ 2 ] )^( hash[ 1 ]&hash[ 2 ] ) ); // maj // We don't bother trimming off the extra ones, // they're harmless as long as we're truncating when we do the slice(). hash = [ ( temp1 + temp2 )|0 ].concat( hash ); hash[ 4 ] = ( hash[ 4 ] + temp1 ) | 0; } for ( i = 0; i < 8; i++ ) { hash[ i ] = ( hash[ i ] + oldHash[ i ] ) | 0; } } for ( i = 0; i < 8; i++ ) { for ( j = 3; j + 1; j-- ) { var b = ( hash[ i ]>>( j * 8 ) ) & 255; result += ( ( b < 16 ) ? 0 : '' ) + b.toString( 16 ); } } return result; }, // Replace with your desired hash function. hashFunc : function( x ) { return this.sha256( x ); }, // Convert hex char to binary string. hexInBin : function( x ) { var ret = ''; switch( x.toUpperCase() ) { case '0': return '0000'; break; case '1': return '0001'; break; case '2': return '0010'; break; case '3': return '0011'; break; case '4': return '0100'; break; case '5': return '0101'; break; case '6': return '0110'; break; case '7': return '0111'; break; case '8': return '1000'; break; case '9': return '1001'; break; case 'A': return '1010'; break; case 'B': return '1011'; break; case 'C': return '1100'; break; case 'D': return '1101'; break; case 'E': return '1110'; break; case 'F': return '1111'; break; default : return '0000'; } }, // Gets the leading number of bits from the string. extractBits : function( hexString, numBits ) { var bitString = ''; var numChars = Math.ceil( numBits / 4 ); for ( var i = 0; i < numChars; i++ ){ bitString = bitString + '' + this.hexInBin( hexString.charAt( i ) ); } bitString = bitString.substr( 0, numBits ); return bitString; }, // Check if a given nonce is a solution for this stamp and difficulty // the $difficulty number of leading bits must all be 0 to have a valid solution. checkNonce : function( difficulty, stamp, nonce ) { var colHash = this.hashFunc( stamp + nonce ); var checkBits = this.extractBits( colHash, difficulty ); return ( checkBits == 0 ); }, sleep : function( ms ) { return new Promise( resolve => setTimeout( resolve, ms ) ); }, // Iterate through as many nonces as it takes to find one that gives us a solution hash at the target difficulty. findHash : async function() { var hashStamp = gdpr_compliant_recaptcha_stamp; var hashDifficulty = '12'; var nonce = 1; while( ! this.checkNonce( hashDifficulty, hashStamp, nonce ) ) { nonce++; if ( nonce % 10000 == 0 ) { let remaining = Math.round( ( Math.pow( 2, hashDifficulty ) - nonce ) / 10000 ); // Don't peg the CPU and prevent the browser from rendering these updates //await this.sleep( 100 ); } } gdpr_compliant_recaptcha_nonce = nonce; fetch('https://www.dbpedia.org/wp-admin/admin-ajax.php', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: 'action=check_stamp&hashStamp=' + hashStamp + '&hashDifficulty=' + hashDifficulty + '&hashNonce=' + nonce }) .then(function (response) { }); return true; }, initCaptcha : function(){ fetch('https://www.dbpedia.org/wp-admin/admin-ajax.php?action=get_stamp', { method: 'GET', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, }) .then(function (response) { return response.json(); }) .then(function (response) { gdpr_compliant_recaptcha_stamp = response.stamp; gdpr_compliant_recaptcha.findHash(); }); }, // Function to display a nice-looking error message displayErrorMessage : function(message) { // Create a div for the error message var errorMessageElement = document.createElement('div'); errorMessageElement.className = 'error-message'; errorMessageElement.textContent = message; // Style the error message errorMessageElement.style.position = 'fixed'; errorMessageElement.style.top = '50%'; errorMessageElement.style.left = '50%'; errorMessageElement.style.transform = 'translate(-50%, -50%)'; errorMessageElement.style.background = '#ff3333'; errorMessageElement.style.color = '#ffffff'; errorMessageElement.style.padding = '15px'; errorMessageElement.style.borderRadius = '10px'; errorMessageElement.style.zIndex = '1000'; // Append the error message to the body document.body.appendChild(errorMessageElement); // Remove the error message after a delay (e.g., 5 seconds) setTimeout(function () { errorMessageElement.remove(); }, 5000); }, addFirstStamp : function(e){ if( ! gdpr_compliant_recaptcha.stampLoaded){ gdpr_compliant_recaptcha.stampLoaded = true; gdpr_compliant_recaptcha.initCaptcha(); let forms = document.querySelectorAll('form'); //This is important to mark password fields. They shall not be posted to the inbox function convertStringToNestedObject(str) { var keys = str.match(/[^\[\]]+|\[[^\[\]]+\]/g); // Extrahiere Wörter und eckige Klammern var obj = {}; var tempObj = obj; for (var i = 0; i < keys.length; i++) { var key = keys[i]; // Wenn die eckigen Klammern vorhanden sind if (key.startsWith('[') && key.endsWith(']')) { key = key.substring(1, key.length - 1); // Entferne eckige Klammern } tempObj[key] = (i === keys.length - 1) ? null : {}; tempObj = tempObj[key]; } return obj; } forms.forEach(form => { let passwordInputs = form.querySelectorAll("input[type='password']"); let hashPWFields = []; passwordInputs.forEach(input => { hashPWFields.push(convertStringToNestedObject(input.getAttribute('name'))); }); if (hashPWFields.length !== 0) { let hashPWFieldsInput = document.createElement('input'); hashPWFieldsInput.type = 'hidden'; hashPWFieldsInput.classList.add('hashPWFields'); hashPWFieldsInput.name = 'hashPWFields'; hashPWFieldsInput.value = btoa(JSON.stringify(hashPWFields));//btoa(hashPWFields); form.prepend(hashPWFieldsInput); } }); // Override open method to store method and URL XMLHttpRequest.prototype.open = function (method, url) { this._method = method; this._url = url; return gdpr_compliant_recaptcha.originalXhrOpen.apply(this, arguments); }; // Override send method to set up onreadystatechange dynamically XMLHttpRequest.prototype.send = function (data) { var self = this; function handleReadyStateChange() { if (self.readyState === 4 && self._method === 'POST') { // Check for an error response if (self.status >= 200 || self.status < 300) { var responseData = self.responseText; if(gdpr_compliant_recaptcha.isValidJson(self.responseText)){ // Parse the response JSON responseData = JSON.parse(self.responseText); } // Check if the gdpr_error_message parameter is present if (!responseData.success && responseData.data && responseData.data.gdpr_error_message) { // Show an error message gdpr_compliant_recaptcha.displayErrorMessage(responseData.data.gdpr_error_message); gdpr_compliant_recaptcha.abortController.abort(); return null; } } } // Call the original onreadystatechange function if (self._originalOnReadyStateChange) { self._originalOnReadyStateChange.apply(self, arguments); } } // Set up onreadystatechange dynamically if (!this._originalOnReadyStateChange) { this._originalOnReadyStateChange = this.onreadystatechange; this.onreadystatechange = handleReadyStateChange; } // Call each override function in order gdpr_compliant_recaptcha.originalXhrSends.forEach(overrideFunction => { overrideFunction.apply(this, arguments); }); result = gdpr_compliant_recaptcha.originalXhrSend.apply(this, arguments); if (result instanceof Promise){ return result.then(function() {}); }else{ return result; } }; // Override window.fetch globally window.fetch = gdpr_compliant_recaptcha.handleFetchResponse; setInterval( gdpr_compliant_recaptcha.initCaptcha, 10 * 60000 ); } } } 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current_page_item menu-item-39"><a href="https://www.dbpedia.org/about/" aria-current="page">About DBpedia</a></li> </ul> </nav> </div> </div> </div> <div id="content" class="site-content newsletter"> <div class="head-background uk-position-relative"> <div class="page-title uk-container uk-text-center"> <h1>About DBpedia</h1> </div> <div id="particles-js" class="uk-position-absolute"></div> </div> <div id="primary" class="content-area white-content uk-margin-auto"> <main id="main" class="site-main"> <div class="content-wrap"> <article id="post-33" class="post-33 page type-page status-publish hentry"> <div class="entry-content"> <p><strong>DBpedia</strong> is a crowd-sourced community effort to extract structured content from the information created in various Wikimedia projects. This structured information resembles an <strong>open knowledge graph (OKG)</strong> which is available for everyone on the Web. A knowledge graph is a special kind of database which stores knowledge in a machine-readable form and provides a means for information to be collected, organised, shared, searched and utilised. Google uses a similar approach to create those knowledge cards during search. We hope that this work will make it easier for the huge amount of information in Wikimedia projects to be used in some new interesting ways. </p> <p>DBpedia data is served as Linked Data, which is revolutionizing the way applications interact with the Web. One can navigate this Web of facts with standard Web browsers, automated crawlers or pose complex queries with SQL-like query languages (e.g. SPARQL). Have you thought of asking the Web about all cities with low criminality, warm weather and open jobs? That’s the kind of query we are talking about.</p> <h2 class="wp-block-heading">Learn about DBpedia</h2> <p>If you like what our project does but are still new to DBpedia there are a few articles that can help you get started:</p> <ul class="wp-block-list"><li>Jens Lehmann, Robert Isele, Max Jakob, Anja Jentzsch, Dimitris Kontokostas, Pablo N. Mendes, Sebastian Hellmann, Mohamed Morsey, Patrick van Kleef, Sören Auer, Christian Bizer. <a href="http://svn.aksw.org/papers/2013/SWJ_DBpedia/public.pdf">DBpedia – A Large-scale, Multilingual Knowledge Base Extracted from Wikipedia</a>.</li><li><strong>About DBpedia Spotlight:</strong> Pablo N. Mendes, Max Jakob, André García-Silva, Christian Bizer. <a rel="noreferrer noopener" href="https://www.researchgate.net/publication/220727213_DBpedia_spotlight_Shedding_light_on_the_web_of_documents" data-type="URL" data-id="https://www.researchgate.net/publication/220727213_DBpedia_spotlight_Shedding_light_on_the_web_of_documents" target="_blank">DBpedia Spotlight: Shedding Light on the Web of Documents</a>. In the Proceedings of the 7th International Conference on Semantic Systems (I-Semantics 2011). Graz, Austria, September 2011. </li></ul> <h3 class="wp-block-heading">About DBpedia Internationalization</h3> <ul class="wp-block-list"><li>Dimitris Kontokostas, Charalampos Bratsas, Sören Auer, Sebastian Hellmann, Ioannis Antoniou, George Metakides. <a href="http://www.websemanticsjournal.org/index.php/ps/article/view/319">Internationalization of Linked Data: The case of the Greek DBpedia edition</a>, Web Semantics: Science, Services and Agents on the World Wide Web, Volume 15, September 2012, Pages 51–61, ISSN 1570–8268, 10.1016/j.websem.2012.01.001.</li></ul> <h3 class="wp-block-heading">About DBpedia Live</h3> <ul class="wp-block-list"><li>Mohamed Morsey, Jens Lehmann, Sören Auer, Claus Stadler, Sebastian Hellmann (2012). <a rel="noreferrer noopener" href="http://jens-lehmann.org/files/2012/program_el_dbpedia_live.pdf" target="_blank">DBpedia and the live extraction of structured data from Wikipedia</a>. Program: electronic library and information systems, Vol. 46 Iss: 2, pp.157 – 18.</li></ul> <h2 class="wp-block-heading">The DBpedia Knowledge Base</h2> <p>Knowledge bases are playing an increasingly important role in enhancing the intelligence of Web and enterprise search and in supporting information integration. Today, most knowledge bases cover only specific domains, are created by relatively small groups of knowledge engineers, and are very cost intensive to keep up-to-date as domains change. At the same time, Wikipedia has grown into one of the central knowledge sources of mankind, maintained by thousands of contributors.</p> <p>The DBpedia project leverages this gigantic source of knowledge by extracting structured information from Wikipedia and by making this information accessible on the Web under the terms of the <a href="http://en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License">Creative Commons Attribution-ShareAlike 3.0 License</a> and the <a href="http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License">GNU Free Documentation License</a>.</p> <p>The DBpedia knowledge base has several advantages over existing knowledge bases: it covers many domains; it represents real community agreement; it automatically evolves as Wikipedia changes, and it is truly multilingual. The DBpedia knowledge base allows you to ask quite surprising queries against Wikipedia, for instance “Give me all cities in New Jersey with more than 10,000 inhabitants” or “Give me all Italian musicians from the 18th century”. Altogether, the use cases of the DBpedia knowledge base are widespread and range from enterprise knowledge management, over Web search to revolutionizing Wikipedia search.</p> <h2 class="wp-block-heading">The DBpedia Data Provision Architecture</h2> <p>The DBpedia <a href="http://dbpedia.org/resource/RDF">RDF</a> Data Set is hosted and published using <a href="http://dbpedia.org/resource/Virtuoso_Universal_Server">OpenLink Virtuoso</a>. The Virtuoso infrastructure provides access to DBpedia’s RDF data via a <a href="http://dbpedia.org/resource/SPARQL">SPARQL</a> endpoint, alongside <a href="http://dbpedia.org/resource/HTTP">HTTP</a> support for any Web client’s standard GETs for HTML or RDF representations of DBpedia resources.</p> <div class="wp-block-group alignwide is-layout-flow wp-block-group-is-layout-flow"><div class="wp-block-group__inner-container"></div></div> <p class="has-text-align-center"><strong>Illustration of Current DBpedia Data Provision Architecture</strong></p> <p class="has-text-align-center"><img decoding="async" width="500" height="431" class="wp-image-1946" style="width: 500px;" src="https://www.dbpedia.org/wp-content/uploads/2020/10/Virtuoso_Linked_Data_Deployment.png" alt="" srcset="https://www.dbpedia.org/wp-content/uploads/2020/10/Virtuoso_Linked_Data_Deployment.png 578w, https://www.dbpedia.org/wp-content/uploads/2020/10/Virtuoso_Linked_Data_Deployment-300x258.png 300w" sizes="(max-width: 500px) 100vw, 500px" /></p> <h2 class="wp-block-heading">Architectural Evolution</h2> <p>Though the DBpedia RDF Data has always been housed in Virtuoso, which has supported all desired means of access since the DBpedia project began, early DBpedia releases used <a href="http://www4.wiwiss.fu-berlin.de/pubby/">Pubby</a> Linked Data Deployment services in front of the Virtuoso SPARQL endpoint.</p> <p>As the project gained traction, the HTTP demands on Pubby’s out-of-process Linked Data Publishing services increased, and the natural option was to take advantage of Virtuoso’s <a href="http://esw.w3.org/topic/SPASQL">SPASQL</a> (SPARQL inside <a href="http://dbpedia.org/resource/SQL">SQL</a>) and other Linked Data Deployment features, by moving these services in-process with Virtuoso.</p> <p class="has-text-align-center"><strong>Illustration of Deprecated Architecture</strong></p> <div class="wp-block-image"><figure class="aligncenter size-full is-resized"><img decoding="async" src="https://www.dbpedia.org/wp-content/uploads/2020/10/pubby-architecture.png" alt="" class="wp-image-2066" width="432" height="230" srcset="https://www.dbpedia.org/wp-content/uploads/2020/10/pubby-architecture.png 432w, https://www.dbpedia.org/wp-content/uploads/2020/10/pubby-architecture-300x160.png 300w" sizes="(max-width: 432px) 100vw, 432px" /></figure></div> <h2 class="wp-block-heading">Nucleus for the Web of Data</h2> <p>Within the <a href="http://esw.w3.org/topic/SweoIG/TaskForces/CommunityProjects/LinkingOpenData">W3C Linking Open Data (LOD) community effort</a>, an increasing number of data providers have started to publish and interlink data on the Web according to Tim Berners-Lee’s <a href="http://en.wikipedia.org/wiki/Linked_Data">Linked Data</a> principles. The resulting Web of Data currently consists of several billion RDF triples and covers domains such as geographic information, people, companies, online communities, films, music, books and scientific publications. In addition to publishing and interlinking datasets, there is also ongoing work on Linked Data browsers, Linked Data crawlers, Web of Data search engines and other applications that consume Linked Data from the Web.</p> <p>The DBpedia knowledge base is served as Linked Data on the Web. As DBpedia defines Linked Data URIs for millions of concepts, various data providers have started to set RDF links from their data sets to DBpedia, making DBpedia one of the central interlinking-hubs of the emerging Web of Data.</p> <h2 class="wp-block-heading">A Brief History</h2> <p>The project was started in 2007 by Sören Auer and Jens Lehmann from the University of Leipzig and Christian Bizer from FU Berlin (now University of Mannheim) along with support from OpenLink.</p> <p>It was througout its history mostly maintained by the following organisations:</p> <figure class="wp-block-table"><table><tbody><tr><td><img decoding="async" width="250" height="105" class="wp-image-2078" style="width: 250px;" src="https://www.dbpedia.org/wp-content/uploads/2020/10/512px-Universitat_Leipzig_logo.svg_.png" alt="" srcset="https://www.dbpedia.org/wp-content/uploads/2020/10/512px-Universitat_Leipzig_logo.svg_.png 512w, https://www.dbpedia.org/wp-content/uploads/2020/10/512px-Universitat_Leipzig_logo.svg_-300x127.png 300w" sizes="(max-width: 250px) 100vw, 250px" /></td><td><img decoding="async" src="https://lh5.googleusercontent.com/OKaF-Ir5q7A62xrZDZNnZxyzPEnCfK_81YRZepqXb-7Gz2_4-tOjPYVlgUKztqJiathsyMulU0SdNO2eNh3epRTHoGxXdVdGHvNkSxYA2iLpzBagViTldO1Pnx69UGMiDMfRHDjA" style="width: 250px;"></td><td><img decoding="async" src="https://lh5.googleusercontent.com/fzwInjs1PH63vForS_6S_SVwp7b2YIiUu9AsSoNG7Zt3S6AhYeEN8qX1dXz7v81HZk2Z5xqHN5mNofSeQ4EA6xChjqU9u76Gop3lzKCyUrSaIEC6czQRlAN8r65Ilg0Wv9qF5VXA" style="width: 200px;"></td></tr></tbody></table></figure> <p class="has-text-align-center"><strong>The first face-to-face meeting in Leipzig 2009</strong></p> <div class="wp-block-image"><figure class="aligncenter"><img decoding="async" src="https://lh4.googleusercontent.com/mdznHFlOYFS3rrsJVfmzi6z_KadmB7t4J7MB2CbJqjfGcW2cL_u1A3GR31jIAxezN0tC_xCofZ4CZGNL1Og8Vma_jB2iW87Jqlwno3M_KdzIjg2iy1Co5ron6FGCHFcb_uNENI_u" alt=""/></figure></div> <p class="has-text-align-center">Some members of the DBpedia Team at a meeting in Leipzig (December 2009). From left to right: <a href="http://www.informatik.uni-leipzig.de/~auer/">Sören Auer</a>, <a href="http://bis.informatik.uni-leipzig.de/SebastianHellmann">Sebastian Hellmann</a>, <a href="http://www.bizer.de/">Chris Bizer</a>, <a href="http://de.linkedin.com/in/jcsahnwaldt">Christopher Sahnwaldt</a>, <a href="http://jens-lehmann.org/">Jens Lehmann</a>, <a href="http://www.wiwiss.fu-berlin.de/en/institute/pwo/bizer/team/IseleRobert.html">Robert Isele</a>, <a href="http://bis.informatik.uni-leipzig.de/ClausStadler">Claus Stadler</a></p> <div class="helpful-block-content wth-theme-faces" data-title=""> <ul> <li><span class="wth-title">Did you consider this information as helpful?</span></li> <li><a data-post="33" data-post-url="https://www.dbpedia.org/about/" data-post-title="About DBpedia" data-response="1" href="#" class="wth-green-btn icon-happy icon1-happy">Yep!</a><a data-response="0" data-post="33" data-post-url="https://www.dbpedia.org/about/" data-post-title="About DBpedia" href="#" class="wth-red-btn icon-sad icon1-sad">Not quite ...</a></li> </ul> </div> </div> </article> </div> </main> </div> </div> <footer id="colophon" class="site-footer"> <div class="footer-wrap uk-container uk-container-expand uk-margin-large-bottom uk-margin-large-top"> <div class="teaser blue nl-subscribe alignwide uk-position-relative"> <div class="teaser-wrap uk-flex uk-flex-middle"> <div class="inset"> <div class="uk-grid-collapse" uk-grid> <div class="title uk-width-1-2@m uk-text-center uk-text-right@m uk-margin-medium-bottom"><h2>Be the first to read about major updates!</h2></div> <div class="content uk-width-1-2@m uk-flex uk-flex-center"> <div class="form-wrap"> <div class="mailchimpinputfields"> </div> <div class="mailchimpformaction"> </div> <div class="datenschutz-info"> The DBpedia Association will use the information you provide to be in touch with you and to send you updates. 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