Two girls are standing together, posing for a picture.
The two girls taking picture of people.
Posing for a picture is to be its subject, taking of a picture is to be the photographer.
exists e2 e1 s1 x1 x2.(for(e1,e2) & for(e2,x2) & n_picture(x2) & Actor(e2,x1) & v_pose(e2) & a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_stand(e1) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(n_girl(x1) & card_eq_2(x1) & a_topic(x1) & of(e1,x4) & n_people(x4) & Theme(e1,x3) & Actor(e1,x2) & v_take(e1) & n_picture(x3) & (x1 = x2))