Show the carriers that have both phones with memory smaller than 32 and phones with memory bigger than 64.
return phones  ;return memories of  #1 ;return #1 where #2 is  lower than 32 ;return #1 where #2 is  higher than 64 ;return #1 of  both #3 and  #4 ;return carriers of  #5
['select', 'project', 'comparative', 'comparative', 'intersection', 'project']