About: http://webisa.webdatacommons.org/80323468

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	If you search the forums for the Reference 7, you will find a thread that includes discussion of the Master 7 at the end, including comparisons.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org