PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The air purifying device is optionally activated via a sensor, such as a motion or heat sensor, and is optionally deactivated via a timer.05-21-2009
http://www.w3.org/ns/prov#wasQuotedFrom
  • faqs.org