An elephant wearing a red and blue scarf walks along the brick road.
The elephant is playing the piano.
An elephant can not be playing the piano while he walks.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5.(n_road(x4) & of(x4,x5) & n_brick(x5) & along(e2,x4) & Actor(e2,x1) & v_walk(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_scarf(x3) & a_blue(s2) & Theme(s2,x3) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_elephant(x1))
exists e1 x1 x2.(n_piano(x2) & n_elephant(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))