PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In big cities during the summertime, air quality at the surface can be an issue when ozone and other gases increase to dangerous levels.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ncsu.edu