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.

Example Input: Now we are living a bark free life! Within two days it had cut out 99% of non-essential barking! At last you can feel peace and quietness in our house! We love our beagles but they were driving us crazy! It really detects barking from far away, now we don’t even hear our neighbor dogs. Great quality and cute btw...This has been a life saver! We are able to get proper sleep now!
Example Output: positive

Example Input: These are postcard stamps that the seller takes forever (pun intended) to mail. It was amazing though ... Once I tried to cancel for taking too long they shipped that day. Soooo incredibly irritated with this purchase.
Example Output: negative

Example Input: Before removing the old gas cap, I test fitted this one. Right away I could tell it was far better made than the original. Its ratchet mechanism was tighter and it was very simple to attach to cap lanyard to the gas cap door. I am sure I will not be seeing any pesky loose gas cap messages and lights on my console for some time.
Example Output:
positive