Two boys in underwear play in the water in the city street.
The two boys are not naked.
If a person is in underwear they are not naked.
exists x1 x2 x3 x4 x5 x6.(n_street(x5) & of(x5,x6) & n_city(x6) & n_water(x4) & a_topic(x1) & in(x1,x2) & in(x2,x5) & in(x2,x4) & n_play(x2) & of(x2,x3) & n_underwear(x3) & n_boy(x1) & card_eq_2(x1))
exists x1.(n_boy(x1) & card_eq_2(x1) & -exists s1.(Theme(s1,x1) & a_naked(s1)))