About: http://webisa.webdatacommons.org/449726459

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	data types like strings and arrays and booleans and whatever.So, the interesting part is that this is supposed to be a new proposal but there was already an extension that was developed by Nikita.
http://www.w3.org/ns/prov#wasQuotedFrom	phpclasses.org