You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

Example Input: I've bought these at the local supermarket and enjoyed them although they are so salty that a few leave my tongue and roof of my mouth burning. Keeps you from eating too many! Occasionally I get really stale items from Amazon.com and this was one. Unedible. Beware of the quality of food items on this website that are on special as they can be very close to due dates or in this case, not expired but stale and unedible just the same.
Example Output: Negative

Example Input: I am the biggest fan of mushrooms you'll ever meet, but these are really disgusting. They taste like dirt. I have to imagine better quality truffles (if these are even truffles at all) are muuuuch better. They'd have to be. There'd be no comparison. These are really bad.
Example Output: Negative

Example Input: There is nothing too good or too bad about these chips. If you like plain potato chips, you'd like these. They are thicker than most brands, fresh out of box, very crunchy and not too salty (for me). One bag has a lot, I generally cannot finish it by myself. Part of the reason is that they are too oily (some chips almost look transparent, if you know what I mean). The taste of oil is a bit too overwhelming for me. If you are used to more spicy chips you may not like these since they do not have any spice, except salt, as the name says. I don't think I'll buy these again. The "best by" date on my bags are March 2011 and I ordered them at the end of October.
Example Output:
Negative