About: http://webisa.webdatacommons.org/120184589

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	Attachment is a pdf file, it is under /home/myuser/sample.pdf, in linux environment.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com