Detailed Instructions: 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.
See one example below:
Problem: These are junk! Both bulbs have burned out within a two month period!! I cannot believe that this company can be in business with such poor quality. I have used infrared lights for my ball python for many years now and I get a varied range of months from a bulb, but I have never gone through two bulbs in a matter of two months! I am very disappointed.
Solution: negative
Explanation: The user seems very disappointed in the product. Because the bulb they ordered has been burned out earlier than usual. So, it's a negative review.

Problem: I bought this assuming it would be firm, as the word "Firm" is explicitly in the title. I need a firm mattress or else I am unable to fall asleep and my back aches. This mattress is not firm at all. It is the softest & squishiest mattress I've ever laid on (and not in a good way). And because we removed it thinking mattress from the packaging and expanded it, we were unable to return (no box large enough to fit). Total waste of $350. Again, steer clear if you are looking for a firm mattress.
Solution:
negative