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: I'm trying to get my eyebrows to fill in after years of over tweezing. This product is easy to use, using the brush applicator in the lid. Just once a day at bedtime, I paint it on my eyebrows. I have very sensitive skin, and this serum doesn't irritate my skin. I'm looking forward to this product giving me my eyebrows back.
Example Output: positive

Example Input: Not happy with this product at all.. It does what its supposed to do I guess,but it's only good to be used indoors,if you want to use it while running,be prepared to lose it on the first day! Once you have it on your neck,its too short and the material to slippery so it doesn't stay put at all.. *VERY DISAPPOINTED*
Example Output:
negative