In this task, you're given a review from Amazon. 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, 4: good, 5: extremely good.

Ex Input:
I bought two of these because I'm hard on chargers and was hoping the metal would help. One of them came broken so that was a waste. But the one that does work is pretty great.

Ex Output:
3

Ex Input:
It can only fit the very small cups and with all the pressure the drink shoots back up on my daughter. Quality is good but design is not made for my little one.

Ex Output:
3

Ex Input:
Only received one bulb, not two as pictured. Received bulb was damaged, but seems to still get the job done. Didn't realize until too late that I should've received two. No big deal. Great product, love using the balls for massage.

Ex Output:
4