Two young boys are playing in the water.
Two boys are in the ocean.
Water can be found many places, not only in the ocean.
exists e1 s1 x1 x2.(n_water(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & a_young(s1) & Theme(s1,x1) & card_eq_2(x1))
exists p1 x1 x2.(n_ocean(x2) & in(x1,x2) & n_boy(x1) & card_eq_2(x1))