About: http://webisa.webdatacommons.org/132016186

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 type of light source is not critical, and other types may be used such as a projection lamp or a laser, with appropriate optical elements.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com