About: http://webisa.webdatacommons.org/405005254

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	1) CO2 is a trace gas in the atmosphere, measurable only in parts per million.
http://www.w3.org/ns/prov#wasQuotedFrom	realclimate.org