About: http://webisa.webdatacommons.org/345761158

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	It seems to me that those two sites are the best places to go for a description of the state-of-the-art on this question.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net