In this task, you're given a review from Amazon's food products. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral or mixed, 4: good, 5: extremely good. 

Q: I used the small cup setting and even opened up the cap and scraped the excess mix out of the cup and it is still very weak tasting.

A: 2
****
Q: We've only used this once, but it kept us awake most of the night.  We were surprised because it's decaf, but we couldn't sleep for hours after going to bed.  Tastes good, though.

A: 3
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Q: Good flavor, but not real sweet.  I add a little stevia for my sweet tooth.

A:
4
****