About: http://webisa.webdatacommons.org/394156472

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 any case, both the question and its answer are fairly old, so it is mostly a matter of locating the most useful and accessible reference.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net