What color has the same shape and size as one another?
return objects ;return shapes of #1 ;return sizes of #1 ;return #1 where #2 are the  same ;return #1 where #3 are the  same ;return #1 in both #4 and #5 ;return the  color of #6
['select', 'project', 'project', 'comparative', 'comparative', 'intersection', 'project']