Four small dogs on leashes walking in a park.
The dogs are roaming free outside.
If the dogs are on leashes they can't be roaming free
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & in(e1,x4) & n_park(x4) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_leash(x2) & n_dog(x1) & a_small(s1) & Theme(s1,x1) & card_eq_4(x1))
exists e1 s1 x1 x2.(n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_roam(e1) & n_outside(x2) & a_free(s1) & Theme(s1,x2))