Two children swimming in green water.
Two children are swimming.
Swimming is done in water.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x3) & n_water(x3) & a_green(s1) & Theme(s1,x3) & n_swimming(x1) & of(x1,x2) & n_child(x2) & card_eq_2(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_swimming(x2)) & n_child(x1) & card_eq_2(x1))