PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Yet in order to achieve, for example by means of a synchronized voltage, the most precise sinusoidal current to generate the electrical rotary fields or traveling waves, the invertor here preferably works at least sometimes with a higher cycle frequency, in particular, 10 kHz to 100 kHz or more (Claim 21).
http://www.w3.org/ns/prov#wasQuotedFrom
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