<http://webisa.webdatacommons.org/prov/349522575>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/377106866> .
<http://webisa.webdatacommons.org/377106866>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/377106866>	<http://www.w3.org/ns/prov#value>	"Furthermore, the sheds or shelters often need gas detectors to protect personnel by sensing dangerously low levels of oxygen - or the presence of hydrocarbons, hydrogen, or other explosive gases." .
<http://webisa.webdatacommons.org/377106866>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<isa.org> .