About: http://webisa.webdatacommons.org/284049274

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 Map should not care whether the object is an Actor or an Item, so I want to create an interface for it.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com