About: http://webisa.webdatacommons.org/446894503

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	You want to restrict it for several reasons, including the fact that if you don't, you get hideous error messages when you use a type with a template that it does not work with (templates in C++ are famous for these).
http://www.w3.org/ns/prov#wasQuotedFrom	digitalmars.com