Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't work!

It's very cute, but it didn't work - you'd wind it up and it would just sit there, not moving, despite all sorts of prodding. I opened it up and managed to pry a metal coil away from the plastic casing, against which it seemed to be rubbing. It worked for a couple of weeks after that, but eventually went back to not working. Too bad...