The dog is carrying a toy through the grass.
A dog is outside.
To carry the toy through the grass, the dog must be outside.
exists e1 x1 x2 x3.(n_grass(x3) & n_dog(x1) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & n_toy(x2))
exists s1 x1.(Theme(s1,x1) & a_outside(s1) & n_dog(x1))