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

Example Input: I used this program for my science class. My students loved it! They learned some interesting facts, saw damage from earthquakes we talked about in class and never once did I hear that it was boring! Can't beat that!
Example Output: Positive

Example Input: I eagerly anticipated watching this movie, as I thoroughly enjoyed the book; however, the movie shares only a passing resemblance to the book. It gets 2 stars because I enjoy Diane Lane and Tuscany is gorgeous, but other than that the movie was dull, Lane's character is nothing short of pathetic, and the ending is trite.
Example Output: Negative

Example Input: Turns out Sheri is the most annoying person ever. And, she really must hate women in labor, judging by the way she makes fun of them and mimics them with a whiney, high-pitched baby voice. Throughout the whole "pushing" section she talks about how much you will whine, and if you don't, just wait because you must not really be in labor yet. She goes on and on about how horrific the pain will be, but them she tries to talk you out of an epidural!! If she was my L&D nurse, I would cross my legs until the next shift change.
Example Output:
Negative