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

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: Cities Of The Red Night is one of the most enjoyable books I have read. The novel has different storys that as the novel progresses intertwine. The books presents situations that are unbelievable but because of Burroughs genius you are convinced of that they are happening in a world not too far from are own. I think he was trying to show the questionableness of what is presented to us as reality. This book also has some of the most vivid pictures and unforgetable lines that I have read. It is Burroughs masterpiece.

Output: Positive

Input: Consider Input: I gave this product as a "special" gift to my wife for Christmas, She just loved it for the first 2 times of use, except we had to make sure the kids were asleep because it is loud. Now it just spins away, but no vibrations. She will still use it on occasions, it can still get the job done, but for the money I payed it didn't last near long enough.
Output: Negative