PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Deep in the semiconductor materials of the LED are impurities", materials such as aluminum, gallium, indium and phosphide.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cuny.edu