The three boys who are wearing life jackets are looking into the water.
The boys are on top of a volcano
There is no water on top of a volcano.
exists e1 e2 x1 x2 x3 x4 x5.(n_water(x5) & n_boy(x1) & card_eq_3(x1) & into(e2,x5) & Actor(e2,x1) & v_look(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_jacket(x3) & of(x3,x4) & n_life(x4) & (x1 = x2))
exists p1 x1.(n_boy(x1) & exists x2 x3.(on(x1,x2) & of(x2,x3) & n_volcano(x3) & n_top(x2)))