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The embedded RDF content will be recognized by any processor of HTML5 Microdata.
| Prefix | Namespace IRI |
|---|---|
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| wdrs | http://www.w3.org/2007/05/powder-s# |
| prv | http://purl.org/net/provenance/ns# |
| n3 | http://dev.restore.ovi.cnr.it:8890/about/id/https/www.britannica.com/topic/ |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| xsdh | http://www.w3.org/2001/XMLSchema# |