Kids are playing in the rain.
Adults are walking in the rain.
They are either kids playing or adults walking.
exists e1 x1 x2.(n_rain(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_kid(x1))
exists e1 x1 x2.(n_rain(x2) & in(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_adult(x1))