<http://webisa.webdatacommons.org/124165488>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/124165488>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/248779557>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/124165488> .
<http://webisa.webdatacommons.org/124165488>	<http://www.w3.org/ns/prov#value>	"FIG. 20a is a plan view of a substrate obtainable by making a negative copy of the substrate of FIG. 19 and machining groove side surfaces in upper portions of such negative copy;" .