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

Example Input: i think sudden fear is a very good example of the so called films noirs and also joan crawfords performace is very convincing as the frightned woman who tries to save her life as well as she can
Example Output: Positive

Example Input: You aren't saving any being this adapter. I purchased this for a 12" G4 Powerbook. The power it supplies goes on and off constantly. This can't be good for the computer. It certainly doesn't charge it. Don't waste your money on this Macally adapter. Try to find an original Apple adapter if you can.
Example Output: Negative

Example Input: A terrible, childishly written book with absolutely NO redeeming value as literature. Higgins loves to "speak Irish" but even that gambit fails in this trite, poorly plotted, worthless endeavour by a writer who should remain retired if he can't do any better than such trashy writing.
Example Output:
Negative