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: Reasons not to buy this video:1. She reads from cue cards the entire time.2. She's extremely stiff and boring.I have only watched this video once in the two years that I have owned it.

Output: Negative

Input: Consider Input: I am a HUGE fan of the Transformers movies, but I have to say that this is not the best of the series. As much as I am not a Megan Fox fan, they should have kept her. I also thought that the ending was a bit abrupt. Not really the way I would have ended the series. (to my knowledge, it was the last)
Output: Positive