PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The climate[2] of the United States is expected to change due to an overall net global warming, which has been predicted to result from the increased global concentration of a number of greenhouse gases" such as methane, carbon dioxide, and chlorofluorocarbons (CFCs) (EPA/UNEP, 1986; NAS, 1983).
http://www.w3.org/ns/prov#wasQuotedFrom
  • ciesin.org