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

Ex Input:
why am I being asked to review a product I didn't purchase. Need to fix the system or allow me to delete the request.

Ex Output:
Negative


Ex Input:
I like the book Castle In the Attic because it was very adventurous. My favorite part in the book was when Mrs.Philips gave William a gift. Do you know what the gift was? Can you figure out what it is? I recommend this book because Castle In the Attic is a very exciting novel to read.

Ex Output:
Positive


Ex Input:
First airbed I received had a leak, sent it back and got the next one within 4 days. Super convenient to have the built in electric pump and super fast to inflate. Takes a bit of an effort to deflate, but that is expected for pretty much any airbed.

Ex Output:

Positive