Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Q: I like the book Castle In the Attic because it was very adventurous. My favorite part in the book was when Mrs.Philips gave William a gift. Do you know what the gift was? Can you figure out what it is? I recommend this book because Castle In the Attic is a very exciting novel to read.

A: Positive
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Q: I buy/view/listen to a lot of music video's (read, sorry night life) and this one was a disappointment. Sound varies too widely act to act. Couple of goosebump moments (I love the Mega-Guitars on Kansas City) but mostly a smorgas-bored of available talent putting in their charity work. Zero additives for the video freak and no real explanation of charitable intentions ever given. Borrow this from someone instead.

A: Negative
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Q: I'm fairly tall and this could go on someone taller then me, with no problem. I love that you can't see it under clothes. I notice my back feel better with it on, my posture improves, and I look good in my clothes. I love this!

A:
Positive
****