People are waling past a wall that is covered in advertisements.
The wall has many advertisements on it.
A wall that is covered in advertisements has many advertisements on it.
exists e2 e1 x1 x2 x3 x4.(past(e1,x2) & in(e2,x4) & n_advertisement(x4) & Theme(e2,x3) & v_cover(e2) & (x2 = x3) & n_wall(x2) & Actor(e1,x1) & v_wale(e1) & n_people(x1))
exists e1 x1 x2.(n_thing(x1) & n_wall(x1) & on(e1,x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_advertisement(x2) & n_quantity(x2))