About: http://webisa.webdatacommons.org/27718528

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	Still, even professors are outraged by the state of the textbook market, and some are pursuing legal alternatives to torrents by offering open-source textbooks and posting materials on wikis, blogs, and other social sites.
http://www.w3.org/ns/prov#wasQuotedFrom	arstechnica.com