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

Example Input: I have been buying Hi-Tec for years. When I found the Altitude IV I fell in love instantly. This shoe fits great, has little break in time and still holds its sturdiness as it ages. Well recomended.
Example Output: Positive

Example Input: This was purchased as a Holiday gift for our 2 1/2 year old. She is very artistic in nature, as are my other two older children (ages 9 & 11) and they all play together when this gets whipped out. It's great for when I need a little time to do some sewing to keep the kids busy for awhile.Sometimes mom gets in on the creative action as well, and then we end up playing for long times, strengthening our bonds.Much better than sitting in front of the TV or computer.The only subject I would mention that could use a little improvement is maybe an idea sheet, like a how to, to give the kids a jumping point on creativity with what is included in this package.
Example Output: Positive

Example Input: I really enjoy the science in science fiction, and believable characters. I have watched the movie Aliens many times and I have always wondered why you would pick really stupid people to go into space. Is there going to be a shortage of smart people in the future? Are we going to rely on a bunch of idiots to take us into the far reaches of space? Is mister Renolds watching too many soap operas on TV?
Example Output:
Negative