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 ordered this particular product as a trial substitute for the "Controlgel" by Textureline, which has always been my first choice. It appears that the "Controlgel" is out of production. This "Smoothing Serum" is a poor substitute. My barber agrees. He got me on the "Controlgel" years ago and I used to buy extra for him, but now, no more!! Too bad . . . we consumers lose again. I wish the "Controlgel" product would come back. My barber and I won't buy any more of the "Smoothing Serum." What a WASTE!!
Student:
Negative