PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Stellar debris, nebulae such as the Bubble (image above) and Orion Nebula, and interstellar clouds contain hydrogen, oxygen, carbon, sulfur, nitrogen, phosphorus, water vapour, methanol, ethanol, cyanide, ammonia, formaldehyde, and complex organic molecules.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dailygalaxy.com