About: http://webisa.webdatacommons.org/391503874

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	I suppose sounds rather simple but because not everyone is looking for the same kinds of books (signed first editions vs cheap reading copies vs textbooks) we have to be careful to consider everyone.
http://www.w3.org/ns/prov#wasQuotedFrom	bookfinder.com