Teacher: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Teacher: Now, understand the problem? If you are still confused, see the following example:
I've read this book with much expectation, it was very boring all through out the book
Solution: Negative
Reason: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this instance: I was upgrading from a Sandisk Sansa e280 4GB unit. This unit does a better job playing everything (audio and videos) and with a larger screen and longer battery life, I was sold. I think this unit is a great option if you want to avoid ipod and itunes.
Student:
Positive