About: http://webisa.webdatacommons.org/22943776

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 distal end has an optical reflection system that includes retroreflective materials known in the art, such as microspheres, corner cubes, or dispersive films.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com