About: http://webisa.webdatacommons.org/51882190

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	The systems and techniques described can be used with many different types of documents, including, for example, PORTABLE DOCUMENT FORMAT (PDF) documents.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com