About: http://webisa.webdatacommons.org/281988721

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	Normally, a mixin is like you typed everything the mixin declared in the scope you mix in, but in this case, you are adding some sort of namespace solely for disambiguation.
http://www.w3.org/ns/prov#wasQuotedFrom	digitalmars.com