About: http://webisa.webdatacommons.org/34487201

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 browser is a client application and PHP runs on the server, where it has no knowledge of browser actions unless the client sends that information, which you could do using Ajax on a browser close.
http://www.w3.org/ns/prov#wasQuotedFrom	dreamincode.net