About: http://webisa.webdatacommons.org/9720520

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	Look at the number of books published each year, the number of book stores and other places that sell books/magazines.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com