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

Ex Input:
Currently, there are no wholes throughout the bed. But, for some reason when I wake up. The bed is already out of air. I only weigh 120lbs. I don't understand why it does that. Please save your money, when you start to have the same problem.

Ex Output:
Negative


Ex Input:
This book it simply one of the best science fiction stories ever written. It should be on the "must read" list for any sci-fi fan.

Ex Output:
Positive


Ex Input:
The addition of this title and its companion volume, "Later Novels & Other Writings," to the venerable Library of America series makes official what mystery fans have always known: Raymond Chandler is one of the gods of American literature. Following the trail blazed by Dashiell Hammett, Chandler created Philip Marlowe and the set the standard against which all private detective fiction is measured. This two-volume set covers almost the full canon of Chandler's work from early pulp stories to all the Marlowe novels, the screenplay for "Double Indemnity," and essays on the mystery genre plus the usual Library of America goodies such as notes on the text and a chronology of the author's life. In terms of literary inventions, the Wild West cowboy and the hard-boiled PI are this country's only true native sons, and, as such, are deserving of resepct. One of them at least now has it.--Michael Roger

Ex Output:

Positive