About: http://webisa.webdatacommons.org/52208561

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	The idea is that there are two possible kinds of things: those whose existence is contigent, i.e. calls for some sort of explanation about its origin, and those whose existence is necessary, i.e. a self-existent being or class of beings.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com