document
  prefix vargen <http://openprovenance.org/vargen#>
  prefix uo <http://urbanobservatory.ac.uk/uo#>
  prefix var <http://openprovenance.org/var#>
  
  entity(var:count, [uo:value='var:count_value'])
  entity(var:image, [uo:value='var:image_filename'])
  entity(var:model, [uo:value='var:model_id'])
  used(uo:counting, var:model, -)
  used(uo:counting, var:image, -)
  activity(uo:counting, -, -)
  wasGeneratedBy(var:count, uo:counting, -)
endDocument