A pretty baby girl posing on a rock wall
There is one girl in this picture
"A girl" implies that there is one girl.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x4) & n_wall(x4) & of(x4,x5) & n_rock(x5) & Actor(e1,x3) & v_pose(e1) & (x1 = x3) & n_girl(x1) & of(x1,x2) & n_baby(x2) & a_pretty(s1) & Theme(s1,x1))
exists p1 x1 x3.(n_picture(x3) & exists x2.((x1 = x2) & in(x2,x3) & n_girl(x2) & card_eq_1(x2)))