PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Many newly formed stars are surrounded by what are called protoplanetary disks, swirling masses of warm dust and gas that may potentially become celestial bodies such as planets and asteroids.
http://www.w3.org/ns/prov#wasQuotedFrom
  • utk.edu