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.

Although it was incredibly tough, I made it through to the end, without looking away. I could only imagine how difficult this project must have been to work on. Thank you Ken, Lisa, and to all of you that had a hand in producing this documentary. It was difficult to watch, but I cried the hardest during the parts where I was able to see some of the rescued dogs doing so well; a reassuring glimpse of the light at the end of the tunnel.
5