<http://webisa.webdatacommons.org/157083730>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/157083730>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<ehso.com> .
<http://webisa.webdatacommons.org/prov/320552142>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/157083730> .
<http://webisa.webdatacommons.org/157083730>	<http://www.w3.org/ns/prov#value>	"Excluding methane; they account for aldehydes, ketones, alcohols, and other pollutants that are not hydrocarbons but are precursors of ozone." .