Policeman standing next to his motorcycle.
The policeman is a motorcycle cop.
A cop is not necessarily a policeman.
exists e1 x1 x2.(n_motorcycle(x2) & of(x2,x1) & n_male(x1) & ne_nam_policeman(x1) & to(e1,x2) & r_next(e1) & Actor(e1,x1) & v_stand(e1))
exists p1 x1.(n_policeman(x1) & exists x2 x3.((x1 = x2) & n_cop(x2) & of(x2,x3) & n_motorcycle(x3)))