About: http://webisa.webdatacommons.org/6696311

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	In this sense, books are a form of advertising for the more lucrative services provided by these authors.
http://www.w3.org/ns/prov#wasQuotedFrom	twistimage.com