African-american boy is playing on playground.
The boy is sleep.
Playing isn't easy when one is a sleep.
exists e1 s1 x1 x2.(on(e1,x2) & n_playground(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1) & a_african-american(s1) & Theme(s1,x1))
exists p1 x1.(n_boy(x1) & exists x2.((x1 = x2) & n_sleep(x2)))