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 ordered a Canon camera battery. NB-5L.Some company (not Amazon) sent the wrong battery.I tired to send it back. Too complicated. (Many emails, lots of forms.) I found someone who needed the incorrect battery (NB-4L) and gave it to them.Then I went to a real store and bought the correct battery.Bad taste in my mouth remains.
Output:
Negative