A young girl in pigtails plays in the sand at a beach.
A boy feeds fish.
If he is feeding fish then he would be at the water and not in the sand playing.
exists e1 s1 x1 x2 x3 x4.(n_sand(x3) & at(e1,x4) & n_beach(x4) & in(e1,x3) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_pigtail(x2) & n_girl(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_feed(e1) & n_fish(x2) & n_boy(x1))