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.
Q: It was great at first. However after about three months, I notice the performance was becoming poorer by the day. The water pressure is good for about one week with new batteries then very weak. I tried different types of batteries, always same outcome. So I bought rechargeable batteries to use. But after another 10 months, the waterpick stopped working all together.
A:
negative