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<http://webisa.webdatacommons.org/prov/239139103>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/203706008> .
<http://webisa.webdatacommons.org/203706008>	<http://www.w3.org/ns/prov#value>	"here is the reason you should be looking at GPS and laser grade-control systems and other technologies that improve control over jobsite productivity: 1." .
<http://webisa.webdatacommons.org/203706008>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<forconstructionpros.com> .