About: http://webisa.webdatacommons.org/269743006

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	Secondary sources can include books, book chapters, articles, especially literature reviews, and some book reviews.
http://www.w3.org/ns/prov#wasQuotedFrom	usablenet.com