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

Input: Consider Input: While this film may not win an academy award the aerial fighting sequences make it well worth the money ---plus the acting from relatively unknown actors was not bad at all----Those people who tout all the films historical errors tis IS a fictionalized account of Lafayette Escadrille how many of the critics especially some of the women critics have even heard of this name before? --Name one WW1 aviation film that has gotten it all correct you can't --"The Blue Max one of my favorites had pilots pulling on some sort of handle to fire their machine guns (all wrong) and had lozenge camouflage on the Fokker Triplanes which was also wrong --there is plenty wrong but I still loved the Blue Max as I love this film too---Maybe director Peter Jackson (King KONG) (who is rumoured considering) remaking the BLUE MAX WILL GET ALL THE SMALL DETAILS RIGHT AND ALSO make a kickass film that even the critics will have to love! Go see FLYBOYS You will be entertained!

Output: Positive

Input: Consider Input: I just returned from a month-long trip to Vietnam and Cambodia, and I found this book extremely useful for Cambodia. Not so much for hotel listings, etc., but for no-nonsense background information on Angkor, Phnomh Penh, and Siem Reap. The Vietnam portion was helpful as well, but I relied more on the Lonely Planet and Rough Guide Vietnam editions for that country. I would definitely recommend this book to someone traveling to Cambodia over the Lonely Planet edition, which is *really* outdated.

Output: Positive

Input: Consider Input: Bought this after the Digital Copy expiration date had elapsed. Nothing on the Amazon site indicates the expiration date. The package has this warning on both the outside and inside. Amazon offered a full refund. That's a stand up company in my opinion.
Output: Negative