<http://webisa.webdatacommons.org/prov/406026193>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/166737095> .
<http://webisa.webdatacommons.org/166737095>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/166737095>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/166737095>	<http://www.w3.org/ns/prov#value>	"These gases principally comprise sulfur dioxide, atmospheric nitrogen and water in some form from the humidity of the air." .