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

Example Input: I just got these stockings but the seller sent me a way smaller size (A-B) than I ordered, I e-mailed them telling them about the problem and will keep you dear buyer posted. I cannot tell you about anything about the quality or color because I have not opened the ones I received.
Example Output: Negative

Example Input: Product received timely. The plug in feature is favorable in that there is no concern of battery failure. Product is easy to use.
Example Output: Positive

Example Input: I had several of these as a kid and never had a problem. This one was defective out of the box! When i tried to put the rocket on the pump and lock it in place the air pump nipple snapped off and rendered the toy useless. After further inspection i found that the rocket itself was the cause. The plastic ring at the base that attaches to the pump was deformed and would not mount on the pump properly, when i slid the pump lock over the mount it started to bind and snapped the nipple off.I packaged it up and returned it.I may try some of the other models to see how they stack up.
Example Output:
Negative