a boy in a blue shirt is walking along a tan and blue wall
A boy is sitting on the wall.
He cannot be walking along the wall and sitting on it at the same time.
exists e1 s1 s2 s3 x1 x2 x3.(along(e1,x3) & n_wall(x3) & a_blue(s3) & Theme(s3,x3) & a_tan(s2) & Theme(s2,x3) & Actor(e1,x1) & v_walk(e1) & in(x1,x2) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 x1 x2.(n_wall(x2) & on(e1,x2) & Actor(e1,x1) & v_sit(e1) & n_boy(x1))