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.

RPM sensor was defective. The lift motor would not stop running with the new circuit board installed.I removed the new circuit board and replaced it with the old one and everything seems to be OK now.The part is so inexpensive it's not worth returning.
Output:
Negative