About: http://webisa.webdatacommons.org/135307713

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	They seem to be the weakest link and IMO, the phones are the most critical link and what you would probably want to build your system around.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org