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.

After about a year of using this generic battery from China, the battery is quickly fading away. It will not hold charges and seems to make my camera actually reject the battery. When using this replacement battery, my camera will sometimes shut off or will not even turn on. I will not ever buy a cheap replacement battery for my expensive cameras. China is producing some really bad products lately, using cheap materials and cheap labor. Those products seem inferior to factories from other countries, especial USA, Japan, Germany. You have been warned.
Output:
Negative