About: http://webisa.webdatacommons.org/420075274

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	In fact, the fact that it is optional is sort of the point of this thread.
http://www.w3.org/ns/prov#wasQuotedFrom	thehighroad.org