About: http://webisa.webdatacommons.org/70558470

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	More particularly, when the player restriction is not set, a block key being a key for use to encrypt block data is generated from data including a device ID and the device ID is stored into the recording medium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com