About: http://webisa.webdatacommons.org/269718920

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	Description of Related ArtProjectors, which are becoming increasingly compact and thus more mobile units, are often used to project images onto projection surfaces other than screens, such as walls.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com