A cop wearing a high-visibility vest is holding a stop sign.
There is a person standing outside.
a cop is holding a stop sign. simply means a person standing outside
exists e1 e2 s1 x1 x2 x3 x4 x5.(Theme(e2,x4) & Actor(e2,x1) & v_hold(e2) & n_sign(x4) & of(x4,x5) & n_stop(x5) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_vest(x3) & a_high-visibility(s1) & Theme(s1,x3) & (x1 = x2) & n_cop(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Time(e1,x4) & n_outside(x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_person(x2))