About: http://webisa.webdatacommons.org/85264482

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	The preferable geometric configuration of the reflector is octagonal; however, it may be other shapes, such as hexagonal, pentagonal or square.
http://www.w3.org/ns/prov#wasQuotedFrom	osti.gov