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:
I got the sea salt and vinegar chips from Kettle.  I am used to the Salt and Vinegar chips in the white bag if I am allowed to say that.  Anyways, my first impression for this is wow at all the chips you get for the price.  I got the 9 0z x 12 bags and wow it is so many for the price.  You can tell they are high quality chips just from the packaging, also.  Well being used to the cheaper chips I wasn't expecting how mellow these things are.  The ones I am used to have a really sour taste to them which I didn't mind but they had tons of flavor.  These chips don't have any sour to them at all, and taste just like them but a lot less strong aftertaste.  If you want to try out Salt and Vinegar chips I suggest you try these out first.  So, for the price and how many you get, these chips are definately worth it.  They are thick and crunchy like the more expensive chips you get at high quality restaurants.  I recommend these, 4 stars.

Ex Output:
Positive


Ex Input:
Its my understanding (based on discussions with material scientists!) that nylon releases toxins when put into hot water..so..whats the deal with the nylon tea bags?  This wasn't stated anywhere or I wouldn't have bought them.  The company told me they wee FDA approved, but the FDA is only worried about things that will kill you in the short run, or that have very high levels of dangerous chemicals.  Trace amounts are permitted.  Considering how much tea I drink, I'd rather not add toxins to my body every single time.  In contrast Might Leaf, while they have similar looking tea bags, theirs are not nylon and are biodegradable in addition to not being dangerous.  Very disappointed in this product.  They should at least have been upfront about the nylon bags so concerned people can avoid buying them.

Ex Output:
Negative


Ex Input:
My dog had this mastered in less than 5 minutes. It takes me longer to hide the treat in it than it takes for him to solve the puzzle. Pieces made of thin plastic. My dog had more fun chewing on the pieces than looking for the treats.

Ex Output:

Negative