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.

So, you're thinking about delving into Science Fiction and you just don't know where to start.Start with Asimov's _Foundation_. Simply put, this is where science fiction starts. You will be introduced to the concept of a vast, complex history of a civilization which is certainly not Planet Earth... and, get this, it was written several decades before we sent anyone to the moon.And there's more... Foundation leads to an entire trilogy which leads to another trilogy which, get this, actually leads you back to Planet Earth.Five stars. Possibly more.
Output:
Positive