<http://webisa.webdatacommons.org/prov/163812465>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/77285947> .
<http://webisa.webdatacommons.org/prov/305331799>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/77285947> .
<http://webisa.webdatacommons.org/77285947>	<http://www.w3.org/ns/prov#value>	"Valves, vents and other safety devices are also checked for their condition and operability." .
<http://webisa.webdatacommons.org/77285947>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/77285947>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<tc.gc.ca> .