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

Ex 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.

Ex Output:
Negative


Ex Input:
I think a couple of people are missing the point... The reason this is out is (I heard) they didn't have the cash to finish AV Vol 2, so this would generate some cash AND be of interest to their core fans. Plus, the demos ~are~ a good insight to their creative process.... I ~love~ to see the rough drafts... If you're just waiting for Vol 2, why did you buy this in the first place?

Ex Output:
Positive


Ex Input:
My son was in need of a sturdy bookbag. Rather than buy another inexpensive one that would surely fall apart, I sought out something more durable. I saw this JanSport bag in a local store and thought it was perfect! It was roomy enough for all his books, was well-made with strong and sturdy fabric and had awesome cushioned straps! Problem was, it was more than I was looking to spend.I did an online search and was amazed to find the very same bag on Amazon for less than half the price! I jumped on it. The backpack arrived within days and my son LOVED it. He claims it's so much more comfortable to carry his books now.Again, an awesome product at a rock-bottom price! Thanks Amazon.

Ex Output:

Positive