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

Ex Input:
This toy has peaces that fall off even while puting it together it kept falling apart the legs would not stay on and part of the tower would not stay together. I would not recomend this toy to anyone else or pay for it again myself.

Ex Output:
Negative

Ex 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would definitely recommend this book to someone traveling to Cambodia over the Lonely Planet edition, which is *really* outdated.

Ex Output:
Positive

Ex Input:
We purchased this for use in a first-grade classroom. After reading the reviews and descriptions we ordered this tape. On receiving it we found that every participant needs a set of dumbbells and ankle weights. Nowhere did we see indications that additional additional equipment was needed. We are now deciding whether to return this tape unopened. Please be aware that this tape is of dubious benefit unless you have access to dumbbells (the bar-bell type, not the student type) and ankle weights.

Ex Output:
Negative