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. 

Ex Input:
Come on Amazon, give me a break.  Powdered tofu?  Get in some real food and I'll buy more from you. I went looking for table sugar. You've got 100 weird kinds of sugar (that you expect me to buy in bulk!) but NO just plain sugar. I'm not eatin' any more of this rice and tofu bread either.  Sorry I just had to rant.

Ex Output:
2


Ex Input:
I purchased this item as an alternative to traditional K-cups in an attempt to save money; however, this product did not work well in my machine. I followed the directions and read reviews to see what works best, but was not able to use the K-cups effectively. The cup itself is too weak and warps in my machine. I compared the shape before and after and there is a big difference; this K-cup seems to expand horizontally and vertically because the plastic is not strong enough. Also, the K-cup is shaped differently from the traditional K-cup. This is neccessary because it does not use foil as a topper, but does not seem to work. In the end, I had to clean up several coffee explosions in my kitchen to figure out how it works, but still could not use it effectively. Maybe I am not doing something correctly, but I'm sure there is also an issue with the product itself. While I do like the idea, I would not suggest purchasing this product until the bugs are worked out.

Ex Output:
2


Ex Input:
This baking soda works great for cooking or for health reasons.  I take it for acid indigestion and heart burn.  Just a 1 tsp in a half glass of water and it's gone.  I use it to make my body more alkaline, so it's great for changing your pH level in your body!

Ex Output:

5