About: http://webisa.webdatacommons.org/91932015

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	if Book extends Product, you can say that Book is a subclass of Product, or that Product is the superclass of Book.
http://www.w3.org/ns/prov#wasQuotedFrom	dreamincode.net