You will be given a definition of a task first, then some input of the task.
Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

I had a great little vacuum for about 10 years but it finally died. I bought this one based on several positive reviews (including my own) and after using it, I'm not sure why so many people are impressed by it. This is one of the least powerful ones I've ever used; even with all three settings, it's hardly enough suction power. My old, much weaker hand held vac from Wal-Mart did just as well cleaning tile floors (and there was no battery to recharge -- only cord).
Output:
Bad review