You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I've read this book with much expectation, it was very boring all through out the book
Solution: Negative
Why? Review writer does not like the book because it was boring, therefore it is a negative review.

New input: I got this for guests to use in our small spare room. Inflating it was quick and easy since it has a built-in pump: you plug it in, turn it on and switch off when it's inflated enough for you. The only drawback is that the pump is really noisy - about the same as a loud vacuum cleaner - so you probably want to inflate the mattress before the rest of the household goes to bed.I had one guest a week, two weeks in a row, sleeping on it for several nights. Both found it comfortable and slept well on it. The extra height makes it feel more like a regular bed and less like you're camping out on someone's floor.Like all air mattresses, the air sucks heat from the body so the sleeper can get really cold; I've found the best way around this is to place a blanket or comforter on the mattress before you put the sheets on - this bottom blanket will insulate the person from the cold air.So far it's been great and I have no complaints.
Solution:
Positive