A city situated among the mountains.
A city is surrounded by flat farm fields.
There are either mountains or farm fields.
exists e1 x1 x2.(n_mountain(x2) & among(e1,x2) & Theme(e1,x1) & v_situate(e1) & n_city(x1))
exists e1 s1 x1 x2 x3.(Actor(e1,x2) & n_field(x2) & of(x2,x3) & n_farm(x3) & a_flat(s1) & Theme(s1,x2) & Theme(e1,x1) & v_surround(e1) & n_city(x1))