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: I'm so dissapointed these are unavailable right now! I LOVE these crackers with cream cheese - it's my favorite snack! I hope they become available again soon! I can't find them anywhere!
Example Output: 5

Example Input: Both of my cats (age 11) threw up for an extended period after eating just 3 of these. Into the trash they go (not the cats, the treats). Not sure what they were reacting to but thought it would be good to let other cat parents know the risk.
Example Output: 1

Example Input: Fast delivery and good product. This is the same lemon juice concentrate you can find in stores and it's really handy to have around to add to sauces, dressings, etc. Such a pain to squeeze fresh juice everytime you need it, nevermind having the lemons on hand to begin with.
Example Output:
5