The grass in the field is short.
The grass is short
The field contains short grass
exists s1 x1 x2.(n_field(x2) & n_grass(x1) & Theme(s1,x1) & a_short(s1) & in(x1,x2))
exists s1 x1.(n_grass(x1) & Theme(s1,x1) & a_short(s1))