If every mitten has a white tip and palm.
return mittens ;return tips of #1 ;return palms of #1 ;return #1 where  #2 is white ;return #4 where  #3 is white ;return number of  #1 ;return number of  #5 ;return if  #6 is equal to  #7
['select', 'project', 'project', 'comparative', 'comparative', 'aggregate', 'aggregate', 'boolean']