If both white dogs have their tongues hanging out of their mouths.
return dogs ;return #1 that are white ;return tongues of #2 ;return mouths of #2 ;return #3 that are hanging out #4 ;return #2 that has #5 ;return number of  #6 ;return if  #7 is equal to  two
['select', 'filter', 'project', 'project', 'filter', 'filter', 'aggregate', 'boolean']