A guy holding a sign, with a shopping cart.
The man is holding something.
A man holding something can also be a guy holding a sign.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & with(e1,x4) & n_cart(x4) & of(x4,x5) & n_shopping(x5) & Theme(e1,x3) & Actor(e1,x2) & v_hold(e1) & n_sign(x3) & (x1 = x2) & n_guy(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_thing(x2))