About: http://webisa.webdatacommons.org/310590021

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	The friends/enemies example it is just another link to add a friend, you said we needed behavior there too (validation that the linked to resource is a Friend).
http://www.w3.org/ns/prov#wasQuotedFrom	w3.org