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

Example Input: THIS AIR BED IS GREAT! I HAD PREVIOUSLY PAID WAY MORE FOR THE "A--O" BRAND, BUT THIS ONE IS EVERY BIT AS GOOD AS THE MORE EXPENSIVE ONE. I AM A GAL WITH A "MATURE" FIGURE, AND IT (TWIN) ONLY LOST A LITTLE AIR. WITH THE ELECTRIC PUMP, NO WORRIES! JUST A HINT FOR SOME OF YOU WITH BAD KNEES LIKE I HAVE....I PLACED TWO CAMP COTS SIDE BY SIDE AND LAID THE MATTRESS ON TOP. PERFECT FOR THESE TIRED OLD KNESS AND BODY TO GET UP AND OFF OF. KUDOS ON THIS AIR BED!
Example Output: Positive

Example Input: Product received timely. The plug in feature is favorable in that there is no concern of battery failure. Product is easy to use.
Example Output: Positive

Example Input: I was amost completely happy with this soundtrack. What upsets me is that there was on particular track from the game that I loved, and it was because of this track that i payed for this c.d. It was upsetting to find that this c.d. contained every song from the game except for the one that influenced me to buy it in the first place.
Example Output:
Positive