About: http://webisa.webdatacommons.org/390420343

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	Preview (the standard viewing and PDF reader app on Mac OS) also allows you to import a signature and add it to PDFs and other documents.
http://www.w3.org/ns/prov#wasQuotedFrom	usni.org