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

Q: This book it simply one of the best science fiction stories ever written. It should be on the "must read" list for any sci-fi fan.

A: Positive
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Q: I have a sixteen-year-old who is questioning all morals. I was finding it difficult to put into words the importance of morals. I bought this book for her to read. She isn't reading it, but I am and I'm finding it very helpful in facilitating discussions with her. At dinner time I bring up one of the seven moral virtues and ideas that the book presents. I've found that it leads to great conversations with her about character and moral behaviors. It has given me the words for concepts that can be difficult to convey in our current morally challenging times. I recommend buying this book when your children are young and referencing it often.

A: Positive
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Q: i dont know why these guys are trying to cheat. i paid full amount and i was expected to receive a twin size airbed but when i opened it it is actual size is single sized matress! so this company is baad! will never suggest it to someone.

A:
Negative
****