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<http://webisa.webdatacommons.org/prov/298706158>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/35228307> .
<http://webisa.webdatacommons.org/35228307>	<http://www.w3.org/ns/prov#value>	"The substrates of upper and lower panels 17 and 18 are are preferably constructed of a material such as quartz glass." .
<http://webisa.webdatacommons.org/35228307>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .