About: http://webisa.webdatacommons.org/312373335

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 answers your question, PHP is the easiest and its free, it also has the fewest reported bugs and known errors.
http://www.w3.org/ns/prov#wasQuotedFrom	webdeveloper.com