PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Indeed, acid-electrolyte direct alcohol fuel cells seem to have only one major drawback, but this drawback is a very serious one.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com