A green sign lists the directions, names, and distance of two different towns.  
The sign has errors.
A sign that lists directions and distances does not imply it has errors.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_town(x8) & n_distance(x6) & n_name(x5) & subset_of(x6,x4) & subset_of(x5,x4) & r_,(x4) & n_direction(x3) & subset_of(x4,x2) & subset_of(x3,x2) & Theme(e1,x2) & Actor(e1,x1) & v_list(e1) & of(x2,x7) & -(x7 = x8) & n_town(x7) & card_eq_2(x7) & n_sign(x1) & a_green(s1) & Theme(s1,x1))
exists e1 x1 x2.(n_sign(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_error(x2))