A motorcycle rider stands on top of his bike.
A man is standing on a two wheeled vehicle.
A man standing on two wheeled vehicle referring to motorcycle rider standing on top of his bike.
exists e1 x1 x2 x3 x4.(on(e1,x3) & of(x3,x4) & n_bike(x4) & of(x4,x1) & n_male(x1) & n_top(x3) & Actor(e1,x1) & v_stand(e1) & n_rider(x1) & of(x1,x2) & n_motorcycle(x2))
exists e1 s1 x1 x2.(on(e1,x2) & n_vehicle(x2) & a_wheeled(s1) & Theme(s1,x2) & card_eq_2(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))