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<http://webisa.webdatacommons.org/134102576>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<saleschristmas.net> .
<http://webisa.webdatacommons.org/134102576>	<http://www.w3.org/ns/prov#value>	"For the heating and cooling systems to work properly, there is a need to maintain them regularly." .
<http://webisa.webdatacommons.org/prov/71579085>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/134102576> .