the l-adic cohomology of rapoport-zink spaces is expected to realize local langlands correspondences in many cases. along this line is a conjecture by harris, which roughly says that when the underlying rapoport-zink space is not basic, the l-adic cohomology of the space is parabolically induced. in this talk, we will discuss a result on this conjecture when the rapoport-zink space is of hodge type and ``hodge-newton reducible''. the main strategy is to embed our rapoport-zink space to an appropriate space of el type, for which the conjecture is already known to hold. if time permits, we will also discuss other applications of this strategy.