About: http://webisa.webdatacommons.org/375045809

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	Video signals may be in any of a variety of video signal formats including analog television video formats such as NTSC, PAL, and SECAM, and pixelated or digitized video signal formats typically used in computer displays,
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com