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

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
Marie Curie's youngest daughter Eve has given us a gift by writing this biography of her mother. Eve manages to let us into her mother's private world while inspiring our full respect of her privacy. Madame Curie and her husband Pierre exemplify the meaning of the word integrity - a rarity, especially in our culture of constantly searching for fame and wealth at all cost. I will read this book multiple times like visiting a friend and learning a bit more about this remarkable person each time.
Answer:
Positive