About: http://webisa.webdatacommons.org/82977658

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	unspecified_type1 and unspecified_type2 are implementation supplied types with implementation supplied operator<<:
http://www.w3.org/ns/prov#wasQuotedFrom	open-std.org