Asfalto, Bologna , by franco fontana , 1985 , photo , Asphalt, Road surface, Number
a green square and a yellow square on the ground
 of a sidewalk. There are two squares drawn on the sidewalk. The first square is yellow and the second square is green. There is a hole in the middle of the square. The sidewalk is gray and there is a shadow of a person on the left side of the image.