About: http://webisa.webdatacommons.org/56854427

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	Also on their Sourceforge pages there is no indication of whether it is Alpha or Beta (which anyways is not a very good indicator).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com