Definition: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Input: I know! I'm as surprised as you are that I didn't enjoy this much-touted classic! I added it to my list of summer must-reads, and it was probably the worst of the bunch. After the second or third time an expected dramatic climax was suddenly resolved by a literal deus ex machina, the thrill was gone. Maybe Asimov was being ironic?? I did enjoy meeting a trader who could've been a Han Solo relative, but that was the highlight. Asimov fans may enjoy this one, but I will stick to Clarke, Bradbury, and Heinlein.
Output:
Negative