You will be given a definition of a task first, then some input of the task.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I bought this to replace the supposedly same power adapter that I purchased last year. This is NOT the same adapter as pictured for the item (I see that a customer has added two pictures of the true product). I was not concerned with this difference but would have preferred to have a light indicating the power is on. At first, it seemed to power my powerbook G4 fine, but later it started to cycle as charging and not charging, thus making the screen brighten and darken. When I shut the computer and let it charge, it did charge some, but I'm concerned about ruining my battery (which is also a replacement). It simply does not work when you are using the computer..and I'm ALWAYS using my computer! I will have to find an alternative to this product. I thought it was bad enough that the one I got last year quit working, but this is ridiculous.
Output:
Negative