Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: If you already have this on DVD, don't waste your money upgrading to blu. The picture quality is only slightly better, it's not widescreen and the biggest disappointment is that the sound is the same as on the DVD. I gave it 2 stars only because it's Charlie Brown (the show itself is worth more than 5 stars!), it's a shame they didn't take the time or spend a few dollars to make the disc worthy of the title.
Output:
Negative