<http://webisa.webdatacommons.org/339232015>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/511349370>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/339232015> .
<http://webisa.webdatacommons.org/339232015>	<http://www.w3.org/ns/prov#value>	"Air is the preferred gas primarily for cost and availability reasons, but other gases, such as carbon dioxide, may be used." .
<http://webisa.webdatacommons.org/339232015>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.co.uk> .