PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Ions such as deuterons (nuclei ofheavy hydrogen) are fed in at the centre.By means of a radio-frequency oscillator a rapidly alternatingpotential of 50,000 volts is maintained across the tank.
http://www.w3.org/ns/prov#wasQuotedFrom
  • mathforum.org