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

Example Input: Received this in great time- I have no problem with the seller:-)BUT! The inside of the case lists all types of materials this can cut including metals, which is what I got it for.One punch through soft 26ga copper sheet and the edges of the punch bent & in some areas, flaked off. The second disk I cut did it in completely. I had to file all of the edges and it probably would have been easier to cut the sheet with shears.So, not for metals.However, I can see it would be great for leather, paper & plastics.To me it was worth the money spent on the chance that it would actually cut metal disks.
Example Output: Negative

Example Input: why am I being asked to review a product I didn't purchase. Need to fix the system or allow me to delete the request.
Example Output: Negative

Example Input: the shipping was fast, as usual by Amazon. The product is terrible, you can barely see the logo, its not a real Colts blue, more of a very dark navy almost purple color. They will be going back. I should have known the price was too good to be true for a product of any real value.
Example Output:
Negative