About: http://webisa.webdatacommons.org/342224376

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 the php script is only updating a session, and is not sending anything back to the browser, you will still need to have the php script send a 200 - OK header, and a space character or some sort of data.
http://www.w3.org/ns/prov#wasQuotedFrom	sitepoint.com