About: http://webisa.webdatacommons.org/140223947

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	In the .NET world, MS recently added nullable types for int, long, etc that never used to be nullable, so I guess they think its pretty important too.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com