About: http://webisa.webdatacommons.org/281526692

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	These blockers come installed in the latest versions of Internet Explorer and Firefox, in third-party toolbars such as Google and Yahoo, and they can come with utility software such the Norton products from Symantec.
http://www.w3.org/ns/prov#wasQuotedFrom	westernu.edu