Children are playing on the swings at a park.
Children are playing outside.
Not al the children that are outside are playing on the swings
exists e1 x1 x2 x3.(n_swing(x2) & at(e1,x3) & n_park(x3) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_outside(x2) & n_child(x1))