About: http://webisa.webdatacommons.org/444956636

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	Some value types could meet the first criterion without requiring any extra storage.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com