About: http://webisa.webdatacommons.org/15321205

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	Though not required, but if you want to know how to do this with C, here is an example:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com