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
You drop a fixed number of drops into a fixed amount of water, as measured in the enclosed test tube up to the given line. The number of drops to use is listed right on the bottle. After a few minutes, you compare the color of the water to the color chart on a card, which gives you your nitrite level. It's plenty easy and effective.It could be even easier if the chart was on the bottle (no need for that extra card lying around), or if there was a test where you just stuck a gauge in some water and got the value, but I've never seen anything like that that doesn't expire at some point.
Answer:
Positive