What is the color of the objects which are the same shape and color?
return objects ;return shapes of #1 ;return colors 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']