A boy playing with an sweeper.
A child is playing.
A boy is a child.
exists e1 x1 x2 x3.(a_topic(x1) & with(e1,x3) & n_sweeper(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_boy(x1))
exists e1 x1.(Actor(e1,x1) & v_play(e1) & n_child(x1))