Four boys pose for the camera.
Four boys are posing with shirts off.
We don't know that the boys have their shirts off.
exists e1 x1 x2.(n_camera(x2) & for(e1,x2) & Actor(e1,x1) & v_pose(e1) & n_boy(x1) & card_eq_4(x1))
exists e1 s1 x1 x2.(a_off(s1) & Manner(e1,s1) & with(e1,x2) & n_shirt(x2) & Actor(e1,x1) & v_pose(e1) & n_boy(x1) & card_eq_4(x1))