Man standing on a bike downtown.
He's a knight.
both standing on a bike and knight are different scenarios.
exists x1 x2 x3 x4.(a_topic(x1) & on(x1,x3) & n_downtown(x3) & of(x3,x4) & n_bike(x4) & n_standing(x1) & of(x1,x2) & n_man(x2))
exists p1 x1.(n_male(x1) & exists x2.((x1 = x2) & n_knight(x2)))