A boy is playing in a room full of balls.
A child is in a room filled with objects.
The boy is a child.
exists e1 s1 x1 x2 x3 x4.(in(e1,x2) & of(s1,x4) & n_ball(x4) & Theme(s1,x3) & a_full(s1) & (x2 = x3) & n_room(x2) & Actor(e1,x1) & v_play(e1) & n_boy(x1))
exists p1 x1.(exists e1 x2 x3 x4.(in(x1,x2) & with(e1,x4) & n_object(x4) & Theme(e1,x3) & v_fill(e1) & (x2 = x3) & n_room(x2)) & n_child(x1))