About: http://webisa.webdatacommons.org/299248616

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	A calibration ???test pattern??? 502 printed on a plate, card or other surface is located relative to the field of view of the system camera or cameras 150, 152.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com