About: http://webisa.webdatacommons.org/345230466

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	It would be more generic and less confusing to separate your two keys A and B: they really are distinct kinds of objects, and are used in different ways.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com