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

Q: Book is over 600 pages and the print is so small it was difficult for me to try to read so I returned it. Perhaps if it ever comes out on Kindle I would try again.

A: Negative
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Q: This is nothing new from Gail Howard, or at all. These wheeling systems can be worked out mathematically, without paying for this book. There are also lots of websites that offer number generators and wheeling system explanations for free. If you want it all spelled out for you then buy this book, but if you are willing to do a little mathematical work check out lottery information website like [...].

A: Negative
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Q: I am usually turned off by environmentalist preachy novels, but I thoroughly enjoyed Midworld. The world itself was well-conceived as a dangerous out-of-control environment, and at the same time in-balance with its own rules.

A:
Positive
****