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

Input: Consider 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.

Output: Negative

Input: Consider Input: I ordered this DVD & several others as presents. They all arrived in good shape & on time for Christmas morning.

Output: Positive

Input: Consider Input: Dr. Ivie is in Italy looking for a beetle. Unfortunately, the beetle he seeks was only found one time by one person thirty years ago in one hole in the ground, and it's only about a millimeter long. While the graduate students dig and all sift through mud, dream sequences, animation, and stock footage open a window into the obsession and passion that drives these impossible tasks of science. The "science" of clear and instant results is dissolved to reveal the reality where methods are bizarre and failure is not only common, but just another step in the process.
Output: Positive