A young boy in a hat is fishing by himself.
The young boy is playing with a ball.
fishing and playing with a ball cannot be done simultaneously.
exists p1 s1 x1 x2.(exists x3.((x1 = x3) & by(x3,x1) & n_fishing(x3)) & n_male(x1) & in(x1,x2) & n_hat(x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2.(n_boy(x1) & a_young(s1) & Theme(s1,x1) & with(e1,x2) & n_ball(x2) & Actor(e1,x1) & v_play(e1))