PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Concerns about global warming caused by the increasing concentration of carbon dioxide and other greenhouse gases in the earth???s atmosphere have resulted in the need for research to reduce or eliminate emissions of these gases.
http://www.w3.org/ns/prov#wasQuotedFrom
  • science.gov