a wall.the wall is [science].a boy is 3 feet in front of the wall.the boy is facing the wall.a man is 3 feet right of the boy.the man is facing the boy.the man is in front of the boy.the wall is 15 feet tall.the [science] is 12 feet tall.a table is 1 feet in front of the boy.the table is facing the boy.the table is left of the boy.the ground is wood.it is noon.a 1.5 feet tall computer is left of the man.the computer's display screen is [number].