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: These chips are too salty!!! I like the crunch, size of the bags, and variety. But i cannot finish the case due to how salty these chips are.
Example Output: Negative

Example Input: You can find this 6-pack for $40 dollars less at diapers.com.  No reason they should be charging this much.
Example Output: Positive

Example Input: I had bought this product last year my dog loved them, but... I subscribe to a couple of Bichon Frise newsgroup and they are saying not to feed these to your dog as they come from China I threw out what I had left for the outside critters in the forest.  I called Dogswell today and they verified that even though they say U.S. on them they are still coming from China.
Example Output:
Negative