PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This star, one of the hottest in the galaxy, has a temperature of about 200,000 Kelvin ??? 33 times hotter than the Sun ??? and is at the center of one of the most beautiful planetary nebula in the galaxy.
http://www.w3.org/ns/prov#wasQuotedFrom
  • universetoday.com