PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • They convert insolation to electricity at approximately 13 % efficiency.The production of electricity from photovoltaic devices is currently uneconomical compared to fossil fuel or nuclear sources except for applications located off the electrical grid.
http://www.w3.org/ns/prov#wasQuotedFrom
  • blogspot.com