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<http://webisa.webdatacommons.org/prov/480970932>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/128015353> .
<http://webisa.webdatacommons.org/128015353>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/128015353>	<http://www.w3.org/ns/prov#value>	"Preferably, a proximity sensor is used to monitor when a document or other object to be read has moved within range of a camera of the machine vision system." .