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.

Ex Input:
Zen brews up to an golden amber liquor. The aroma is sweet spearmint. The blending of this tea is excellent--spearmint could be overpowering but they use just the right amount of it. Slightly sweet spearmint is the primary flavor, then you taste a hint of lemon. The green tea provides an herbal base for these two flavors that makes the intial impression of zesty spearmint and lemon modulate into a substantial potion. Very nice and satisfying with a clean spearmint aftertaste. Remember that this tea does have caffeine--however, it does not say how much on the box. A good estimate might be 30 mg--compared to 90mg for the average cup of coffee. Make sure you time how long you brew this tea because if you brew too long it becomes bitter. Four minutes is ample.

Ex Output:
Positive

Ex Input:
I have tried many many many different brands. I also did my research on what's the best for my Dane and most of it is expensive. I found this to be very good quality and a good price among Chicken Soup and Canidae. My GD loves this he eats 7-8 cups a day and he would love to eat more. He has a shiny coat, no allergies and his sensitive stomach thanks the food. I highly recommend this. But I am buying it somewhere else a little cheaper and 2 day shipping. ;)

Ex Output:
Positive

Ex Input:
My golden doodle chewed through the rope within 2 days. I thought it was going to be a great interactive toy for him but it was not. Clever boy chewed through the rope so that the treats poured out! lol

Ex Output:
Negative