PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The ground signal of a 2-pin power plug for mobile applications, introduces low frequency noise, such as 50 or 60 Hz.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com.au