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

Example Input: Product reviews are very subjective. Based on the reviews of this boot I hoped for a great boot at a fair price. Instead I found the boot to be subpar in terms of comfort. They shoes were stiff and far too 'roomy'. My feet where floating inside them. I returned them immediately. I've had far more comfortable boots right out of the box.
Example Output: Negative

Example Input: I was extremely lucky to have found this, because it is a) an import & b) limited edition...especially lucky to find just thrown in the kylie section of a Pennsylvania Borders! Ok, here it is track-by-track:1. Chocolate [Radio Edit]:While this cuts the album version of the song by one minute and two seconds, it's better. Her vocals are improved, & more of an arrangement is used. 10/102. City Games: THis extreme rarity is fabulous. Very R&B; pop. 10/103. Chocolate [Tom Middleton Cosmos Remix]: A club dub. Cool when you have so much energy in you that you have to dance it out, but not for a regular listen. 7/104. Chocolate [EMO Mix]: Woderful. A good R&B; dance mix of the song. 9/105. Love @ First Sight [Live]: A live version of the Fever hit. I usually love live sounds, but this when isn't quite up to par with the original. 8/10I still have yet to figure out how to access the video. (...)Overall great package, great mixes, great rarities.
Example Output: Positive

Example Input: I got this book free for my Kindle. I have read a lot of free Kindle books and most of them are not that great, but they are at least a little entertaining. This is the first book I have deleted before finishing it. I read to 35% and just could not take any more! It was not funny at all, it was super annoying and predictable.
Example Output:
Negative