PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Because every chemical, such as carbon dioxide, methane, or water, has a unique light signature in the spectrum, this technique is able to reveal the chemical composition of a planet???s atmosphere.With this system, the researchers are the first to determine the spectra of all four planets surrounding HR8799.
http://www.w3.org/ns/prov#wasQuotedFrom
  • amnh.org