Detailed Instructions: 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.
Q: This was very carefully installed, I carry my phone in a wallet case for extra protection. The screen protector cracked soon after installed and now has bubbled up. There is only 1 in a pack.
A:
1