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: leaks after leaks after leaks. i have patched them with super glue and bike patches and they just dont seem to stop comming. i am tired of patching them. dont ever buy a air mattress. just fork out the cash for a good mattress.
Student:
Negative