Instruct: Classify a review into positive or negative sentiment.
Query: It was great while it lasted

I bought one and liked it a lot. It was everything it was said to be, but then it broke after a month. The company replaced it with a reconditioned unit. That one worked for about six months and then broke. Now I've given up. Too bad. It was nice while it lasted.Update: I like it so much when it was working that I bought one for my mother. That one broke too. She used it once or twice and put it away. When I tried it, it was broken.