Are there two red spheres that are the same color and size?
return spheres ;return #1 that are red ;return colors of #2 ;return sizes of #2 ;return #2 where #3 are the  same ;return #2 where #4 are the  same ;return #2 in  both #5 and  #6 ;return number of  #7 ;return if #8 is equal to two
['select', 'filter', 'project', 'project', 'comparative', 'comparative', 'intersection', 'aggregate', 'boolean']