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

Example Input: There's so much to say about what's dumb about this movie, but it has one thing going for it: pretty colors flickering fast. A great movie when you want to give your brain a rest. Best viewed on mute.
Example Output: Negative

Example Input: I don't care about all the hype, I dig this record a lot. I play it, then I play it again. it's almost always in my head. I wish I had four more of her records. the performance is very loose and the production is really tight. rollicking, rowdy, catchy as hell. she's got a great spark.
Example Output: Positive

Example Input: I ordered this DVD & several others as presents. They all arrived in good shape & on time for Christmas morning.
Example Output:
Positive