About: http://webisa.webdatacommons.org/8209330

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 user can easily import documents from many sources, including e-mail attachments, and can even add a digital signature to PDF files.
http://www.w3.org/ns/prov#wasQuotedFrom	issuu.com