A group of people posing for a picture with the sun behind them.
the people are taking pictures
They could be posing for a picture without taking pictures themselves.
exists e1 x1 x2 x3 x4 x5.(n_sun(x5) & a_topic(x1) & of(x1,x2) & for(e1,x4) & with(x4,x5) & behind(x5,x1) & n_thing(x1) & n_picture(x4) & Actor(e1,x3) & v_pose(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2))