About: http://webisa.webdatacommons.org/185529496

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	I think that you can get the browser by executing some JavaScript, for example verify navigator.userAgent or any browser specific object, for example document.defaultView will be null in IE and not null in FF, something like this:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com