sentences:  Stephen King, in his introduction to "Different Seasons", a collection of four novellas, has called the novella "an ill-defined and disreputable literary banana republic"; King notes the difficulties of selling a novella in the commercial publishing world, since it does not fit the typical length requirements of either magazine or book publishers.Despite these problems, however, the novella's length provides unique advantages; in the introduction to a novella anthology titled "Sailing to Byzantium", Robert Silverberg writes