Two dogs wrestle in a field.
Two dogs are sleeping in their beds.
Dogs don't wrestle while sleeping.
exists e1 x1 x2.(in(e1,x2) & n_field(x2) & Actor(e1,x1) & v_wrestle(e1) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2.(in(e1,x2) & n_bed(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_sleep(e1) & n_dog(x1) & card_eq_2(x1))