Instructions: 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.
Input: These K-cups are either extremely old or they're not authentic Green Mountain K-cups. The coffee is weak and has a bad after-taste. Both my spouse and I have noticed this independently of each other. I tried to contact the seller to ask about this but couldn't figure out who it was.
Output:
Negative