A person riding a rodeo bull.
A man riding a bull in an arena.
A person riding a rodeo bull does not indicate that a man riding a bull in an arena.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bull(x3) & of(x3,x4) & n_rodeo(x4) & (x1 = x2) & n_person(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(e1,x4) & n_arena(x4) & Theme(e1,x3) & Actor(e1,x2) & v_ride(e1) & n_bull(x3) & (x1 = x2) & n_man(x1))