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

Example Input: So far I'm very happy with my boots.They fit well and seem very well constructed.Time wiill tell how they perform but so far so good.
Example Output: Positive

Example Input: i usally buy these boots from famous footwear and pay like 80 to 90 bucks so i found them on amazon alot cheaper, thanks
Example Output: Positive

Example Input: When I attempted to install the mirror onto my pickup, the three screws came unthreaded from the housing, which means that I cannot tighten the mirror to my pickup.
Example Output:
Negative