PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Including methods of collection and some tests for identifying various gases including carbon dioxide, sulphur dioxide and ammonia.
http://www.w3.org/ns/prov#wasQuotedFrom
  • scienceaid.co.uk