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

Example Input: Dear potential sucker,My first airbed by intex sprung a leak in about a week, so I obtained a refund. I bought this model next, and it lasted almost twice as long!I am now on my third. I should have learned my lesson, but my current intex airbed has been around for about one year, and currently has 9, count 'em, NINE leaks. Everytime I patch one, another springs.Intex also makes inflateable boats. They must get sued for a lot of drownings. No wonder they have no email contact. If you buy ANY intex airbed, you are buying utter garbage.Sincerely,SidWa State
Example Output: Negative

Example Input: A classic story based on history. One of Hypatia's crimes appears to have been ready to provide a hypothesis of a heliocentric universe, long before Copernicus and with a much worse response from the Christian community.
Example Output: Positive

Example Input: Once you get past the hype, you will realize this device is a [$] clock. When you press the button on the e-marker, it only records the time, not the radio station. When you download the information to your computer and connect to the website it looks for the song that was played on the station how many hours/days ago you pressed the button. If you selected the wrong station you will get a different song.If you use the scan button on your radio, this product is not for you
Example Output:
Negative