Given the task definition, example input & output, solve the new input case.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Output: Negative
Review writer does not like the book because it was boring, therefore it is a negative review.

New input case for you: I looked around before buying an airbed. Saw many options and compare. Many different comments that confused me. But decided to buy this one due to the price and the electric pump. Excellente product, inflates in just 2-3 minutes and last all night long. Easy to store in the morning. 5 star product.
Output:
Positive