About: http://webisa.webdatacommons.org/140994479

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	First, a light projecting source (20) is provided, such as a light bulb or a laser light source.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com