Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: This video is fine for ballroom dancers, but it has nothing to do with the authentic Argentine Tango. Even ballroom dancing has now a separate category for Argentine Tango. Unfortunately, this video is not that. That's why, I rate it at 1.
[EX A]: Negative

[EX Q]: I ordered this DVD and received a substitute I never received the DVD I ordered from Importcds (the Vendor). I contacted them and did not recieve any feedback. I can't rate a DVD I have never seen. I didn't bother to send it back because it would have cost me more that I orginally paid for it. In the future I will watch for the name of the person and/or persons I am buying from. I thought they were a good company. I understand a simple mistake but, to not get a response at all is not good businees sense. I spend hundreds of dollars a month on Amazon.com building my DVD collection. I guess I will be more careful in the future.
[EX A]: Negative

[EX Q]: There are many funy things about money, wishes and so on. I smile every time when read their. When I have some problem in my life I get this book and read from any place I opened the book. And all the time I start to feel better.
[EX A]:
Positive