If a spotted stingray is in water with a tan gravel bottom
return stingray ;return #1 that is spotted ;return water ;return bottom of #3 ;return #3 where  #4 is tan ;return #5 where  #4 is gravel ;return #3 that has #6 ;return #2 that is in  #7 ;return number of  #8 ;return if  #9 is at least one
['select', 'filter', 'select', 'project', 'comparative', 'comparative', 'filter', 'filter', 'aggregate', 'boolean']