Two children, one of which is holding a stick, are standing on the beach as the sun begins to set.
The twins are playing stickball.
Two children standing on the beach as the sun begins to set does not imply they are twins or playing stickball
exists e2 e3 e1 p1 x1 x2 x3 x4 x5 x6 x7.(n_sun(x7) & n_beach(x6) & as(e3,x7) & on(e3,x6) & Actor(e3,x5) & v_stand(e3) & of(x5,x2) & n_one(x5) & Theme(e2,x4) & Actor(e2,x3) & v_hold(e2) & n_stick(x4) & of(x3,x2) & n_one(x3) & Topic(e1,p1) & Actor(e1,x1) & v_begin(e1) & exists e4 x8.(Theme(e4,x8) & Actor(e4,x1) & v_set(e4) & n_thing(x8)) & (x1 = x2) & n_child(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_twin(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_stickball(x2))