A child is playing among a flock of birds in the park.
Just an empty park.
There cannot be an empty park if there is a child there.
exists e1 x1 x2 x3 x4.(n_park(x4) & in(e1,x4) & among(e1,x2) & of(x2,x3) & n_bird(x3) & n_flock(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))
exists s1 x1.(a_topic(x1) & r_just(x1) & n_park(x1) & a_empty(s1) & Theme(s1,x1))