PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In nature, it is emitted from soils and the oceans; anthropogenic sources of nitrous oxide include the cultivation of soil, the production and use of fertilizers, and the burning of fossil fuels and other organic material.
http://www.w3.org/ns/prov#wasQuotedFrom
  • enviroliteracy.org