If an image features a larger rodent with at least one smaller rodent's head on its back.
return rodents ;return size of #1 ;return #1 where  #2 is smaller ;return #1 where  #2 is larger ;return back of #4 ;return head of #3 ;return #6 that is on #5 ;return #3 that has #7 ;return images ;return number of  #8 for each  #9 ;return #9 where  #10 is at least one ;return number of  #11 ;return if  #12 is at least one
['select', 'project', 'comparative', 'comparative', 'project', 'project', 'filter', 'filter', 'select', 'group', 'comparative', 'aggregate', 'boolean']