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<http://webisa.webdatacommons.org/246977811>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/246977811>	<http://www.w3.org/ns/prov#value>	"The slide is a standard item available from a number of commercial sources, including the Corning Glass Works, in Corning, New York." .
<http://webisa.webdatacommons.org/prov/195836963>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/246977811> .