About: http://webisa.webdatacommons.org/342009727

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	All browsers have removed vendor prefixes from the Backgrounds module, which includes box-shadow and border-radius, even though the spec is only a Working Draft.Update: Seems this module actually was a CR, but went back to draft.
http://www.w3.org/ns/prov#wasQuotedFrom	quirksmode.org