Three teenagers are carrying wood down a street while one of the teenagers is smiling at the camera.
Three teenagers are doing things.
Teenagers are taking picture and smiling at the camera, which can be phrased as "doing things" for simplification.
exists e1 p1 x1 x2 x3 x5.(n_camera(x5) & exists e2 x4.(at(e2,x5) & Actor(e2,x4) & v_smile(e2) & of(x4,x1) & n_thing(x4) & card_eq_1(x4)) & n_teenager(x1) & n_teenager(x1) & while(e1,p1) & Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & down(x2,x3) & n_street(x3) & n_wood(x2) & card_eq_3(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_thing(x2) & n_teenager(x1) & card_eq_3(x1))