Two dogs are wrestling in the grass.
Two dogs outside.
"In the grass" implies being outside.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_wrestle(e1) & n_dog(x1) & card_eq_2(x1))
exists s1 x1 x2.(a_topic(x1) & Theme(s1,x2) & a_outside(s1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))