<http://webisa.webdatacommons.org/prov/330660731>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/83383166> .
<http://webisa.webdatacommons.org/83383166>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/83383166>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<globalspec.com> .
<http://webisa.webdatacommons.org/83383166>	<http://www.w3.org/ns/prov#value>	"chemicals, such as CO2, CO, SOX, NOX etc., can be present in the gases that are emitted to the atmosphere. ." .