<http://webisa.webdatacommons.org/prov/248779555>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/122693180> .
<http://webisa.webdatacommons.org/prov/248951343>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/122693180> .
<http://webisa.webdatacommons.org/122693180>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/122693180>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/122693180>	<http://www.w3.org/ns/prov#value>	"FIG. 20A and 20B is a perspective view of the concave mirror of FIG. 17." .