A dog sniffs the grass.
The dog is outside.
Grass in only outside.
exists e1 x1 x2.(n_grass(x2) & Theme(e1,x2) & Actor(e1,x1) & v_sniff(e1) & n_dog(x1))
exists s1 x1.(n_dog(x1) & Theme(s1,x1) & a_outside(s1))