What color is the large and small cube in the front?
return cubes ;return #1 that  are large ;return #1 that  are small ;return #2 in  the  front ;return #3 in  the  front ;return the  color of #4 ;return the  color of #5 ;return #6 ,   #7
['select', 'filter', 'filter', 'filter', 'filter', 'project', 'project', 'union']