Two young boys playing lacrosse run for the lacrosse ball.
the boys are five
You can not infer they are five.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & for(e1,x5) & n_ball(x5) & of(x5,x4) & n_lacrosse(x4) & n_lacrosse(x4) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_run(x3) & of(x3,x4) & (x1 = x2) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists p1 x1.(n_boy(x1) & exists x2.((x1 = x2) & n_thing(x2) & card_eq_5(x2)))