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

[EX Q]: By something else. This is the worst piece of machinery I have ever bought. Virtually impossible to cut any size tile on the diagonal. Typical imported junk!!!!!
[EX A]: Negative

[EX Q]: The lady is kinda annoying. But the videos made me feel prepared and made me feel comfortable with my decision to not go to any formal classes, these were more than enough.
[EX A]: Positive

[EX Q]: All works are untampered with and represents truth based reading as to the authenticity. Nice bound book to boot as with elder tradition.
[EX A]:
Positive