About: http://webisa.webdatacommons.org/217836622

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 seems to me that a WeakHashMap owned by the Application or within a singleton is a better choice.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com