If at least 4 puppies are laying on the ground next to their mama.
return puppies ;return ground ;return mama of #1 ;return #1 laying on #2 ;return #4 next to  #3 ;return the  number of  #5 ;return if  #6 is at least 4
['select', 'select', 'project', 'filter', 'filter', 'aggregate', 'boolean']