PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ?? Clouds, smoke, or other forms of pollution block the sun from getting to the solar panels.
http://www.w3.org/ns/prov#wasQuotedFrom
  • advantagesanddisadvantagesofsolarenergy.net