A man in a hat is fishing from a boat.
A man is racing his speedboat.
One cannot be fishing while racing simultaneously.
exists e1 x1 x2 x3.(from(e1,x3) & n_boat(x3) & Actor(e1,x1) & v_fish(e1) & in(x1,x2) & n_hat(x2) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_race(e1) & n_speedboat(x2) & of(x2,x1) & n_male(x1) & n_man(x1))