About: http://webisa.webdatacommons.org/321443293

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	UPDATE: to print firstname (or any other), you can use the usual SimpleXML addressing mechanisms. your case is a little more complicated because you are using namespaces. still workable though - try something like this:
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com