About: http://webisa.webdatacommons.org/73790221

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	Currently they have books (as those found on shelves) and electronic books.A special icon designates each type of book so that once you learn the system, you can quickly distinguish between the types of books.
http://www.w3.org/ns/prov#wasQuotedFrom	econtentmag.com