PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The clump was mainly hydrogen and helium gas, slightly enriched with a percent or two of heavier elements???remnants of older generations of stars.
http://www.w3.org/ns/prov#wasQuotedFrom
  • nap.edu