About: http://webisa.webdatacommons.org/177116740

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 this example, at each of 6 points, namely, the upper left, the upper center, the upper right, the lower left, the lower center, and the lower rightportions on a recording sheet, a test pattern is recorded.
http://www.w3.org/ns/prov#wasQuotedFrom	patentgenius.com