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: This is a very new ballet documentary with many interviews of students and parents on the joys and sacrifices of dancing ballet. There are many fine scenes of dance routines and the technical proficiency of these dancers is very impressive, indeed. Such is the state of ballet in the 21st century! Several aspects are covered, such as training, family support(or the lack of it), competition, injuries, and eating disorders. This is certainly long enough(almost two hours), but my only criticism is that in many of the interviews we see the person seated in a chair for almost the entire segment, instead of having them talk over scenes of dancing. As a ballet dancer myself, when people start to talk about dancing, I want to see dancing while I listen to them(or else I feel the need to get up and dance myself!). There certainly should have been enough of available footage for this. As it is, it is still an excellent, American look at ballet.
Student:
Positive