Two people are taking pictures while a third is holding a camera.
girl is alone
If there are two people, the girl cannot possibly be alone.
exists e1 p1 x1 x2.(exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_hold(e2) & n_camera(x4) & n_third(x3)) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2) & n_people(x1) & card_eq_2(x1))
exists s1 x1.(Theme(s1,x1) & a_alone(s1) & n_girl(x1))