About: http://webisa.webdatacommons.org/202857249

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	However, the control symbol need not be a bar code, but could comprise OMR marks or other data recognizable to the optical reader.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk