A large yellow sign on the side of a building.
There's a sign in the grassy field.
The sign is either on the side of a building or it is in the grassy field.
exists s1 s2 x1 x2 x3.(n_side(x2) & a_topic(x1) & on(x1,x2) & of(x2,x3) & n_building(x3) & n_sign(x1) & a_yellow(s2) & Theme(s2,x1) & a_large(s1) & Theme(s1,x1))
exists p1 s1 x1 x2.(n_field(x2) & a_grassy(s1) & Theme(s1,x2) & in(p1,x2) & exists x3.((x1 = x3) & n_sign(x3)))