A child is playing among a flock of birds in the park.
A person playing.
A child is a person, he is in the park so he is playing.
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 x1 x2.(a_topic(x1) & n_playing(x1) & of(x1,x2) & n_person(x2))