two men walk through the water.
Two men walking.
To walk through the water indicates walking.
exists e1 x1 x2.(n_water(x2) & through(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2.(a_topic(x1) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_man(x1) & card_eq_2(x1))