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

[EX Q]: I purchased this MP3 player as a Christmas gift for our daughter only to find out on Christmas Day that is not compatible without our computer despite every update available. While we could see the preloaded video and it is very clear and bright, we were never able to upload any music. My husband (who is computer wizard) spent 12 hours trying to get this thing to work, but without any success. Next time we'll buy an IPod.
[EX A]: Negative

[EX Q]: THE BEST SAUCE YOU COULD EVER PUT ON YOUR TABLE AND USE ON YOUR COOKING ON JUST ABOUT ANYTHING, BRINGS THE COSTARICAN SPIRIT ON YOUR MEALS!
[EX A]: Positive

[EX Q]: So, you're thinking about delving into Science Fiction and you just don't know where to start.Start with Asimov's _Foundation_. Simply put, this is where science fiction starts. You will be introduced to the concept of a vast, complex history of a civilization which is certainly not Planet Earth... and, get this, it was written several decades before we sent anyone to the moon.And there's more... Foundation leads to an entire trilogy which leads to another trilogy which, get this, actually leads you back to Planet Earth.Five stars. Possibly more.
[EX A]:
Positive