A man wearing red is driving an old fire engine.
A man is driving a stolen firetruck.
The fact a man is driving an old fire engine doesn't imply that the fire engine is stolen.
exists e1 e2 s1 x1 x2 x3 x4 x5.(Theme(e2,x4) & Actor(e2,x1) & v_drive(e2) & n_engine(x4) & of(x4,x5) & n_fire(x5) & a_old(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_red(x3) & (x1 = x2) & n_man(x1))
exists e2 e1 x1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_drive(e2) & n_firetruck(x2) & Theme(e1,x2) & v_steal(e1) & n_man(x1))