Telephone wires are visible.
They have underground electricity.
Visible is different than underground.
exists s1 x1 x2.(Theme(s1,x1) & a_visible(s1) & n_wire(x1) & (x1 = x2) & ne_nam_telephone(x2))
exists e1 s1 x1 x2.(n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_electricity(x2) & a_underground(s1) & Theme(s1,x2))