PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • A quartz oscillator is usually operated by a direct-current power source of 5 V. It has been recognised that it tends to change its oscillation frequency in response to even small variations in the applied power voltage when its Q decreases markedly such as in the case of immersing it into a liquid phase.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com