PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Frequency regulation service is provided by generators and from storage technologies such as flywheels and electric vehicles, demand resources and possibly even residential water heaters.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ferc.gov