About: http://webisa.webdatacommons.org/426776467

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	As for saying maybe there is a reason to hide them from users"; Indeed there is a reason they are hidden from users, but quoting from my reply, LOTS of semi-advanced features are missing.
http://www.w3.org/ns/prov#wasQuotedFrom	imore.com