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.

Example Input: Go to Costco, and you can buy lower than this price per oz. Currently $32 ($3 off regular $34.99)+ tax for big size = 0.83$/oz. Besides, it is more convinient to return if you kid does not like this formula Be careful, many times some sellers over price a product, and still make the product rank in the best sellers.
Example Output: 1

Example Input: This bone is nothing more than a big dog treat. I have a 2 yr old Pit who ate through the souper in 5 minutes. After reading other reviews I took it away from him and will save the rest for a later date. I was hoping for a bone that would last a little bit longer as a chew toy and not just be eaten like a treat. Will not be buying this again.
Example Output: 2

Example Input: Last summer, our family discovered <a href="http://www.amazon.com/gp/product/B001CC734G">Izze Sparkling Juice Variety Pack - 12/12 Oz Btls</a> and used them for special treats on really hot days. They were refreshing and because they did not add any sugar we could fool ourselves into thinking they were healthy (they are healthier...) When we saw Switch, we thought we might be getting even more of the same in new flavors. Unfortunately, these are more syrupy than the Izzy's. At least for adults, the are less crisp and refreshing. However, kids would of course prefer these as they are sweeter. We also tried Watermelon/Strawberry and we liked the Kiwi Berry better. The watermelon/Strawberry had a much more Jolly Rancher like taste. I think we are going to stick to our Izzy's I think.
Example Output:
3