Two girls play in the beach.
Two girls build a sandcastle on the beach.
A sandcastle is not mentioned.
exists e1 x1 x2.(n_beach(x2) & in(e1,x2) & Actor(e1,x1) & v_play(e1) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_beach(x3) & on(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_build(e1) & n_sandcastle(x2) & n_girl(x1) & card_eq_2(x1))