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:
We have this model about a year now.  It hasn't worked right from the beginning.  We often had trouble closing the top.  Sometimes it doesn't work at all.  Other times it works like a charm.  When it works like a charm, it's not uncommon to find coffee grounds in the cup. It's a mess.  I bought the same model for the office. The experience was similar.  Sometimes it makes a full cup of coffee other times it doesn't.  Sometimes it won't even work at all.  We have to turn it on and off and cross our fingers. A friend reports these problems as well.  I agree with the reviewer who says, DO NOT BUY.  A waste of money for the machine,for the K-cup that couldn't be used, and an exercise in frustration. We're in the market for a different brand.  When Keurig first came out, they had the market.  They have a lot of competition now . . . which hopefully will make it easier to find a machine that works well.

Ex Output:
Negative


Ex Input:
This has a great rich taste. Remember this is ground whole leaf, so the tea is stronger than you may expect.  Not overly sweet and dissolves readily.  I use it during workouts mixed with ice water in a Polar bottle.

Ex Output:
Positive


Ex Input:
Our two dogs are not really interested in this toy, it has pretty much sat in their toy box since we bought it for them. Not sure why, they seem to like most toys. It is very durable from what I can tell though.

Ex Output:

Negative