Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Input: Consider Input: If you are not in really good shape this is a great product to get ready for P90X. It does get kind of boring because you are doing the same workouts every other day, but they do work. It is only about 30 mins but it is amazing how well it works.

Output: Positive

Input: Consider Input: Love the show, which for me has held up well: it's obviously dated but still makes me laugh.What didn't make me laugh, though, was the quality of this DVD. The quality of the transfer, it's as though you're still watching it on VHS! It doesn't support surround-sound, even by just repeating the two channels.There are no subtitles in any language, and no special features of any kind!Worse, mine had scratches right out of the plastic! The scene where Jack comes up to the breakfast table in his speedos is all pixelated. Was that true for anybody else?

Output: Negative

Input: Consider Input: The book arrived in a little more time than I expected, but it was within the time frame indicated. However, I am happy with the book's condition. It's better that described. Great book and price.
Output: Positive