About: http://webisa.webdatacommons.org/101348389

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 reason is the obvious one, that such sites are really geared up for the needs of sellers of books and related materials and not for those of us who need to list a variety of types of items.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.ca