About: http://webisa.webdatacommons.org/246025375

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	The interface in this model requires operations such as comparison to T, comparison to nullopt, assignment and creation from either.
http://www.w3.org/ns/prov#wasQuotedFrom	open-std.org