About: http://webisa.webdatacommons.org/301433469

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	Edit: In reading the follow up comments, I realize my answer was a bit cryptic.
http://www.w3.org/ns/prov#wasQuotedFrom	mathoverflow.net