<http://webisa.webdatacommons.org/388854647>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wunderground.com> .
<http://webisa.webdatacommons.org/388854647>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/294386046>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/388854647> .
<http://webisa.webdatacommons.org/prov/161668501>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/388854647> .
<http://webisa.webdatacommons.org/388854647>	<http://www.w3.org/ns/prov#value>	"Quoting weather42009:Water vapor is a light compound and oxygen and nitrogen are heavier elements." .