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<http://webisa.webdatacommons.org/prov/161307121>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/166389050> .
<http://webisa.webdatacommons.org/166389050>	<http://www.w3.org/ns/prov#value>	"The first to fifth surfaces R1 to R5 are formed on one optical element made of a medium such as glass or plastic material." .
<http://webisa.webdatacommons.org/166389050>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .