About: http://webisa.webdatacommons.org/342436728

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	It even works with files that have restrictions, such as password-protected PDF files and limitations on copying, saving, page extraction, and printing!
http://www.w3.org/ns/prov#wasQuotedFrom	pdf-helper.com