PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • ed emission (red in the image) comes mostly from gas being heated up by the supernova remnant's expanding shell.
http://www.w3.org/ns/prov#wasQuotedFrom
  • caltech.edu