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: 4.5 stars The vented bottles helped so much with my baby’s gas problems. Took half star off cuz they are diff prices depending on color, wished they were same prices
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: This is the second batch of these I bought. The cat has thoroughly destroyed the other 4. They take quite a beating, but after being thrown all over for a year it was time for new mice.
Example Output:
positive