A boy poses for the camera at a party.
The boy smiles for the camera.
Someone is taking the boy's picture so he poses and smiles for the camera.
exists e1 x1 x2 x3.(n_camera(x2) & for(e1,x2) & at(x2,x3) & n_party(x3) & Actor(e1,x1) & v_pose(e1) & n_boy(x1))
exists e1 x1 x2.(n_camera(x2) & n_boy(x1) & for(e1,x2) & Actor(e1,x1) & v_smile(e1))