If there is on one crab in each image.
return images ;return crabs in  #1 ;return number of  #2 for each  #1 ;return #1 where  #3 is equal to  one ;return number of  #1 ;return number of  #4 ;return if  #6 is equal to  #5
['select', 'project', 'group', 'comparative', 'aggregate', 'aggregate', 'boolean']