About: http://webisa.webdatacommons.org/434263896

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	Don??t know the other ones you mentioned and other ones in the same price range might be better but I??m a happy owner of these anyway.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org