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<http://webisa.webdatacommons.org/317050047>	<http://www.w3.org/ns/prov#value>	"In integrated optics, a substrate is generally selected from various materials such as glasses, ferroelectrics, semiconductors, and polymers." .
<http://webisa.webdatacommons.org/prov/298706135>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/317050047> .