About: http://webisa.webdatacommons.org/391427188

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	If you can use a library, Cairo is a good one that will do this for you I believe.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com