About: http://webisa.webdatacommons.org/66429453

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	Such extensions are informal (defined by authors according to the specs), and can???t reliably be used by e.g. Google to distinguish between various kinds of cite elements (who knows what class names will be used for this?).
http://www.w3.org/ns/prov#wasQuotedFrom	html5doctor.com