PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ??? Authors can use the class attribute to extend elements, effectively creating their own elements, while using the most applicable existing ???real??? HTML element, so that browsers and other tools that don???t know of the extension can still support it somewhat well.
http://www.w3.org/ns/prov#wasQuotedFrom
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