Part 1. Definition
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Part 2. Example
I've read this book with much expectation, it was very boring all through out the book
Answer: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Part 3. Exercise
This is a great product and I have used it for years. It is a part of flea control and should not be expected to be the one answer for every flea. Pets need to have flea medicine/baths as well as continuous vacuuming of the house since fleas can live on pet hair. A flea cycle is 21 days-using this product in a combination with proper flea control is the best way to get the maximum performance. Spray where pet sleeps, all carpets, furniture, area rugs, and fabrics where fleas can lay eggs. Keep it up once a week or more for the first 3 weeks to break the flea cycle while applying flea medication to your pets. Humans can carry fleas into the house as well as pets. The trick is to stay on top of the flea cycle so it doesn't become out of hand. If it is allowed to go through a few cycles without proper flea control, it will take much more effort, time, and products to get it under control.
Answer:
Positive