The number on the trash box is 66.
The trash box is numbered 99.
The number on the trash box is either 66 or 99.
exists p1 x1 x2 x3.(n_box(x2) & of(x2,x3) & n_trash(x3) & n_number(x1) & exists x4.((x1 = x4) & n_thing(x4) & card_eq_66(x4)) & on(x1,x2))
exists e1 x1 x2 x3.(n_box(x1) & of(x1,x2) & n_trash(x2) & Recipient(e1,x3) & Theme(e1,x1) & v_number(e1) & n_thing(x3) & card_eq_99(x3))