Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: As a father of a daughter with autism, i was surprised by how little time the author contributed to the family life. More time was spent at work and then writing a book when it sounds like home would have been the place to be at this critical time for his family. He writes often about don't critize until you've walked in my shoes yet he has no problems bashing the GFCF diet which has proved helpful to many families. while written with great love for his son, i am not sure his priorities are in order.
Solution:
Negative