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:
The first time I tried this product  was 2 years ago at the Venetian spa restaurant in Las Vegas  having  a cup of tea with some friends. We all remarked how delicious and tasty it made our tea.  We've been using it ever since. A little goes a long way and I use it anytime I would ordinarily use a sweetener.  Since the artificial sweeteners are so unsafe and unhealthy and I have a sweet tooth, I felt this was a safe alternative. Not only is it safer, but there's no aftertaste and doesn't raise your blood sugar level. This particular stevia has absolutely no bitter taste to it. I've tried others before and since and there's no comparison.

Ex Output:
5


Ex Input:
While the product is delicious, it's annoying that the peanut butter stays on the waxy paper instead of on the product. You need a fork to scrape the peanut butter off the protective top sheet.

Ex Output:
1


Ex Input:
The flavor is not that great.  I would prefer something with a little more flavor,tastes like cheap coffee.  I would not this purchase again.

Ex Output:

2