Teacher: Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.
Teacher: Now, understand the problem? If you are still confused, see the following example:
I was very surprised at the high quality of the stitching, the sturdiness of the handles and the padding for my laptop. The price is amazingly low and the look is very good. I am quite happy with this purchase. It fit my MacBook Pro perfectly, with a little bit of room to spare.
Solution: Positive Review
Reason: This rating is correct based on this review provided by the user as they liked the product very much and they were surprised that product is so good.

Now, solve this instance: Shipping was the fastest I've ever had on an Amazon purchase. Having been using my new Superb Choice 9 cell replacement battery for about a week now. The first thing I noted was that it is considerably bigger than my 6 cell original. It installed perfectly and has rubber feet on the base that make the back of the laptop sit slightly higher. This should actually create better air flow and keep the laptop operating a bit cooler. When fully charged, Vista tells me I have around 4 hours and 15 minutes of battery life. I'm happy with the purchase and would recommend this battery.<br /><br />UPDATE: Battery lasted about 3 months. When it is fully charged currently the battery life is around 4 minutes! I retract my recommendation and reduced my 5 stars to 1.
Student:
Negative Review