Some sailors are posing on a ship.
Sailors pose for a picture on a ship.
sailors are posing is the same as  Sailors pose
exists e1 x1 x2.(on(e1,x2) & n_ship(x2) & Actor(e1,x1) & v_pose(e1) & n_sailor(x1))
exists e1 x1 x2 x3.(for(e1,x2) & on(x2,x3) & n_ship(x3) & n_picture(x2) & Actor(e1,x1) & v_pose(e1) & n_sailor(x1))