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.

Ex Input:
This machine is really good, but not without some problems. While the noise it makes does a lot to mask other noises, our cats definitely do enjoy this thing. It also helps keep them calm, which in turn, brings us much peace of mind. However, sometimes you need your hands free for something else -- like getting the cat out from between the mattresses.

Ex Output:
Good Review

Ex Input:
My wife bought this at Walmart. The bag had very cheap construction, and she only used it, about 5 times, before we were informed that stitching on other parts of the bag's seams ripped.

Ex Output:
Bad review

Ex Input:
I've bought this and the regular version of it, both are just a little too much. It takes me about 2 hours to drink each cup (about 30 min on one side, then half an hour with another side) so I think I'll stick to the plain tea flavors. I'm really happy because now my coffee is caffeinated whenever we want! However, the taste isn't as good as it used to be, even though it's decaf. It's still great though.

Ex Output:
Good Review