The grass in the field is short.
The grass is short and very green
Just because grass in the field is short doesn't mean grass is very green.
exists s1 x1 x2.(n_field(x2) & n_grass(x1) & Theme(s1,x1) & a_short(s1) & in(x1,x2))
exists s1 s2 x1.(n_grass(x1) & r_very(s2) & Theme(s2,x1) & a_green(s2) & Theme(s1,x1) & a_short(s1))