About: http://webisa.webdatacommons.org/388854647

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	Quoting weather42009:Water vapor is a light compound and oxygen and nitrogen are heavier elements.
http://www.w3.org/ns/prov#wasQuotedFrom	wunderground.com