You will be given a definition of a task first, then some input of the task.
In this task, You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

Added entire bottle to a 40 gallon tank. I put in ammonia to test and see if product worked before adding fish. Ammonia was not reduced at all. Product did not work to jump start the cycle. I'm glad I did not put fish in yet. Everything else with tank was correct tested with API test kit.
Output:
negative