A baby and a young boy playing.
A child is playing with a baby.
A child is a young boy.
exists s1 s2 x1 x2 x3.(a_topic(s1) & subset_of(x2,s1) & n_playing(x2) & of(x2,x3) & n_boy(x3) & a_young(s2) & Theme(s2,x2) & subset_of(x1,s1) & n_baby(x1))
exists e1 x1 x2.(with(e1,x2) & n_baby(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))