PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The rectifier and inverter switching devices S1-S6, S???1-S???6 may be any suitable controllable electrical switch types (e.g., IGCTs, GTOs, thyristors, IGBTs, etc.) that are controlled according to any suitable type or form of switching scheme or schemes, such as phase control, pulse width modulation, etc., in open or closed-loop fashion.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com