About: http://webisa.webdatacommons.org/230285228

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	That carbon dioxide is a greenhouse gas has been known, from experiment, for over a century.
http://www.w3.org/ns/prov#wasQuotedFrom	scienceblogs.com