About: http://webisa.webdatacommons.org/65002120

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	If a web page links to a document, such as Acrobat, Word, PowerPoint, and Excel, then a link to a plug-in for viewing the file must also be included.
http://www.w3.org/ns/prov#wasQuotedFrom	calstatela.edu