and I like <a href="http://www.neubauten.org/" rel="foaf:interest" lang="de">Einstürzende Neubauten</a>. </p> <p> My <span rel="foaf:interest" resource="urn:ISBN:0752820907">favorite book is the inspiring <span about="urn:ISBN:0752820907"><cite property="dc:title">Weaving the Web</cite> by <span property="dc:creator">Tim Berners-Lee</span></span></span>. </p> </body> </html> Note how the prefix foaf is still used without declaration. RDFa 1.1 automatically includes prefixes for popular vocabularies such as FOAF. The minimal document is: <html lang="en"> <head> <title>Example Document</title> </head> <body vocab="http://schema.org/"> <p typeof="Blog"> Welcome to my <a property="url" href="http://example.org/">blog</a>. </p> </body> </html> That is, it is recommended that all of these attributes are used: vocab, typeof, property; not only one of them. RDFa Structured Data Example Person Schema in RDFa.<div vocab="http://schema.org/" typeof="Person"> <a property="image" href="http://manu.sporny.org/images/manu.png"> <span property="name">Manu Sporny</span></a>, <span property="jobTitle">Founder/CEO</span> <div> Phone: <span property="telephone">(540) 961-4469</span> </div> <div> E-mail: <a property="email" href="mailto:(your emailid)">msporny@digitalbazaar(.)com</a> </div> <div> Links: <a property="url" href="http://manu.sporny.org/">Manu's homepage</a> </div> </div> See also Microformats, a simplified approach to semantically annotate data in web pages Open Graph protocol, a way to use RDFa to integrate web pages into the Facebook social graph Microdata - another approach at embedding semantics in HTML using additional attributes eRDF, an alternative to RDFa (now obsolete) GRDDL, a way to extract (annotated) data out of XHTML and XML documents and transform it into an RDF graph Schema.org, search-engine supported schemas for structured data markup on web pages that can be expressed as RDFa References External links RDFa Primer hGRDDL RDFa – Implications for Accessibility Mark Birbeck presenting RDFa at Google in May 2008. Video archived at ghostarchive.org on 24 May 2022. Resource Description Framework Metadata publishing Semantic Web Semantic HTML XML-based standards World Wide Web Consortium standards Domain-specific knowledge representation languages WordPress