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: For those who love salt and vinegar potato chips, this is the one to choose. The flavor is zippy and tart, with no unpleasant chemical aftertaste like the less "natural" versions of this snack. The 2-ounce bags are just right to share at lunch. The chips are a little greasy, and that's why I've given them 4 stars instead of 5.
Example Output: 4

Example Input: I was introduced to the Blair chips by a friend. I mostly ignore potato chips because I really don't like them. However, these I like the most among all the chips in the Blair line. They are savory and can be eaten rapidly. The hot chips are good because they are so hot, I cannot eat them fast. I am so happy I cannot get them at local stores because I would eat them all the time.
Example Output: 5

Example Input: This 100% juice, carbonated beverage is a good alternative to traditional soda. As a somewhat health-conscious consumer, I avoid high fructose corn syrup (HFCS) as much as possible. This beverage contains no HFCS, no added sugar, no preservatives, and no added color. I'm sampling the orange flavor. It contains 100% of your daily recommended dose of Vitamin C, and 20% of your Vitamin A for the day. The downside is a single 8.3 fl oz can contains almost as many calories as a 12 oz a can of soda. The Orange-Tangerine flavor reminds me a bit of Orangina. Perhaps you've tried Crystal Geyser's Fruit Squeeze beverages which are also similar. It's definitely not comparable to artificially flavored orange beverages (Sunkist, Crush). It has a hint of grapefruit-like taste to it, but without the bitterness, which may be due to the added apple, grape, and acerola concentrates. The aftertaste is a bit metallic to me. The beverage itself is clear - without pulp of any kind - and is light-orange-yellow in color. This is a good alternative to those looking for something soda-like, but healthier than all the HFCS-loaded options. Maybe it's a good option for parents to give to their kids if their kids drink a lot of soda anyway. Personally, I don't enjoy it enough to buy it instead of other available, similar products. If I want orange juice or crave soda, I'll rather drink the real thing.
Example Output:
2