About: http://webisa.webdatacommons.org/291794393

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 can easily test if an interface is a contract if it implements this base contract.
http://www.w3.org/ns/prov#wasQuotedFrom	msdn.com