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

Input: Consider Input: I was extremely disappointed with the fabric and color when it came. It is obvious that it is of poor quality but I guess you get what you paid for 10 bucks.The zipper of the plastic cover of one set was broken.I bought 2 queen sheets and I wanted to return both purchases if only I did not have to pay for shipping.Do not buy this!!!! You will regret it.

Output: Negative

Input: Consider Input: My husband and I didn't have time to attend an 8 hour birthing class at the hospital, so we opted for this video. It was very informative and helped us understand what was happening when we went to the hospital. It was a little cheesy, but definitely worth getting.

Output: Positive

Input: Consider Input: Before I begin, let me just say that I absolutely love her Dark series. Those books are great. This one had potential, but it just fell flat. Her characters simply weren't developed enough this time for me to relate to them. This effort was decent but not at all up to her usual standards.
Output: Negative