<http://webisa.webdatacommons.org/prov/447498131>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/233369889> .
<http://webisa.webdatacommons.org/233369889>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<environmental-expert.com> .
<http://webisa.webdatacommons.org/233369889>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/233369889>	<http://www.w3.org/ns/prov#value>	"This article covers the types of gas risks and the fixed-gas detection technologies and methods available to mitigate those risks." .