Young children smile and pose for the camera while holding up hand signals.
Some childeren smiles while holding up hand signals for the camera.
Some is more generic than young.
exists e2 e1 e3 s1 s2 s3 x1 x2 x3 x4 x5.(n_camera(x3) & while(e2,e3) & a_up(s3) & Manner(e3,s3) & Theme(e3,x4) & Actor(e3,x2) & v_hold(e3) & n_signal(x4) & of(x4,x5) & n_hand(x5) & for(e2,x3) & Actor(e2,x2) & v_pose(e2) & n_child(x2) & a_young(s2) & Theme(s2,x2) & Actor(e1,x1) & v_smile(e1) & n_child(x1) & a_young(s1) & Theme(s1,x1))
(x)