About: http://webisa.webdatacommons.org/402535154

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	In several embodiments, low-medium initial light pipe 268 may be made of a material such as quartz, glass, plastic, or acrylic.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca