You will be given a definition of a task first, then some input of the task.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

"An excellent memoir and true crime saga. It made me think about some issues, such as the death penalty and victims' rights. It took me about 50 pages or so to really get into it, then I couldn't put it down."
Output:
Positive