If one hamster is holding a round food item in its paws.
return hamsters ;return item ;return #2 that is food ;return #3 that is round ;return paws of #1 ;return #1 holding #4 in  #5 ;return the  number of  #6 ;return if  #7 is equal to  one
['select', 'select', 'filter', 'filter', 'project', 'filter', 'aggregate', 'boolean']