About: http://webisa.webdatacommons.org/22940274

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The principal contributor to recent global warming is greenhouses gases, mostly carbon dioxide and methane, which trap heat in the lower levels of the atmosphere.
http://www.w3.org/ns/prov#wasQuotedFrom	nasa.gov