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

Ex Input:
I purchased the Intex airbed to replace an Aerobed that our cats "loved" too much during a guest visit. Comfort wise, the Intex wins hands down-supportive yet comfortable as well. Convenience wise, it inflates a little slower than our old Aerobed (albeit, there is more to inflate) yet it takes up less room when rolled and stored in the sack that comes with it. The only reason I didn't give it 5 stars is because it is VERY high, so a restless sleeper can fall off pretty easily.

Ex Output:
Positive


Ex Input:
I received the message that the U. S. government is hiding knowledge about what is beyond Earth's atmosphere. But all governments hide information from the masses of their people. What intrigued me was when the Sentinel Prime character said to the Optimus Prime character that they used to be gods and now they were called machines. I can relate to that statement. I am a descendant of a people that were performing high sciences at one point in time and now we are beasts of burden. Try to talk to a typical African person about science and see what you get. At best they'll say, how does this help me pay my bills? At worse they'll look at you like you have 2 heads.

Ex Output:
Positive


Ex Input:
While the stories are good, what made these books for me as a kid and most people I know was the artwork. MAN, they scared the crap out of me as a kid as well as everyone else. The new artwork is generic Harry Potter-esque and has none of the unadulterated creepiness the original one had. Get the ones with the original art folks, there is a whole new generation out there to be as freaked out as we were.

Ex Output:

Negative