Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Purchased based on these reviews

And what a mistake that was. I'm into artsy, obscure movies but this was a complete waste of time. The black and white picture quality was very poor at times. I don't know if they were going with the gritty look or not, but it didn't work. The movie was just boring and painful to watch. And now I'm wasting time writing a review for this and I'll just leave it at that.