About: http://webisa.webdatacommons.org/430272075

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	FIG. 11 is analogous to FIG. 8, except the profile of only one refractive structure is shown, and it has three planar surfaces 40, 42, 44, the outer planar surfaces 42, 44 being inclined relative to the center planar surface 40.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com