About: http://webisa.webdatacommons.org/203837859

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	When you receive the device_metadata_available, note that fact, which the rest of your plugin will use to determine whether the info is available or not.
http://www.w3.org/ns/prov#wasQuotedFrom	mobileread.com