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<http://webisa.webdatacommons.org/291656921>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<forconstructionpros.com> .
<http://webisa.webdatacommons.org/291656921>	<http://www.w3.org/ns/prov#value>	"Some manufacturers, including Caterpillar, offer an optional freeze protection system." .
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