About: http://webisa.webdatacommons.org/317223139

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	In addition, in the event there is a birdswing such as the one illustrated in FIG. 2 or other defects positioned between the two edges, a third spiked pulse or dark spot signal will be produced by the video detector circuit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com