A person wearing a hat takes a picture while its snowing.
A person is taking a picture of a snowman.
The picture is not necessarily of a snowman just because its snowing.
exists e1 e2 x1 x2 x3 x4 x5.(while(e2,x5) & n_snowing(x5) & of(x5,x1) & n_thing(x1) & Theme(e2,x4) & Actor(e2,x1) & v_take(e2) & n_picture(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_hat(x3) & (x1 = x2) & n_person(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & of(x2,x3) & n_snowman(x3) & n_picture(x2) & n_person(x1))