Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example: I've read this book with much expectation, it was very boring all through out the book
Solution is here: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Now, solve this: Janet Is Truly Amazing . I Went To See Her Concert Here In Johannesburg , South Africa . It Was Unbelievable . I Bought The Vhs Tape Of The Velvet Rope And Now I Am Back To Buy The Dvd Version . I Can Watch The Tape Over And Over Again . Janet Is Truly Entertaining . I Actually Did Not Expect The Concert To Be That Great , But I Would Really Stunned . The Choreography Was Really Out Of This World . I Recommend This Movie To Everybody . For 2 Hours , You Are Transformed To A World Of Magic And Excitement . I Can Guarantee That You Will Love It . Thank You Janet For Your Outstanding Performance , It Will Honestly Remain A Part Of Me For A Very Long Time ! !
Solution:
Positive