Man in a black hat and green jacket.
A security guard wearing a black hat patrols the building.
A man in a black hat and green jacket is not necessarily a security guard, and he does not have to be patrolling the building.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & n_jacket(x4) & a_green(s2) & Theme(s2,x4) & n_hat(x3) & a_black(s1) & Theme(s1,x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_man(x1))
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_building(x6) & (x4 = x6) & n_patrol(x4) & of(x4,x5) & n_hat(x5) & a_black(s1) & Theme(s1,x4) & (x1 = x3) & n_guard(x1) & of(x1,x2) & n_security(x2))