If there are two stingrays per image pair
return stingrays ;return image pairs ;return number of #1 for each #2 ;return #2 where #3 is  equal to two ;return number of #2 ;return number of #4 ;return If #5 is  equal to #6
['select', 'select', 'group', 'comparative', 'aggregate', 'aggregate', 'boolean']