Two guys playing football on a campus green.
There are some guys in this picture
Some can refer to two guys.
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x4) & n_green(x4) & of(x4,x5) & n_campus(x5) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_football(x3) & (x1 = x2) & n_guy(x1) & card_eq_2(x1))
exists p1 x1 x3.(n_picture(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_guy(x2)))