Children sleeping on the floor.
Kids are playing outside.
You can't be sleeping and playing at the same time.
exists e1 x1 x2.(n_floor(x2) & ne_nam_children(x1) & on(e1,x2) & Actor(e1,x1) & v_sleep(e1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2) & n_kid(x1))