A man is dressed in police clothes with a helmet and shield.
The policeman is wearing his uniform when he pulls over a speeding car.
A man wearing police clothes may or may not be a policeman, and one cannot infer he pulls over a speeding a car.
exists e1 x1 x2 x3 x4 x5 x6.(in(e1,x2) & with(x2,x4) & n_shield(x6) & n_helmet(x5) & subset_of(x6,x4) & subset_of(x5,x4) & n_clothes(x2) & of(x2,x3) & n_police(x3) & Theme(e1,x1) & v_dress(e1) & n_man(x1))
exists e1 p1 x1 x2.(n_male(x1) & n_male(x1) & n_uniform(x2) & of(x2,x1) & n_policeman(x1) & exists e2 s1 x3.(over(e2,x3) & n_car(x3) & a_speeding(s1) & Theme(s1,x3) & Actor(e2,x1) & v_pull(e2)) & when(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_wear(e1))