PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Why clouds are named the way they are, is explained as well, which may help students make comparisons and contrasts between the ten different types of clouds.
http://www.w3.org/ns/prov#wasQuotedFrom
  • librarything.com