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

Example Input: not bad but be warned you need to buy extra play-doh at local store before handing it to the kid's
Example Output: Positive

Example Input: i find it incredible that so many people speak so glowingly of this book. on the basis of its literary merit it deserves a prominent spot in supermarket checkout lanes. that this is in any way respected as a novel or thought of as remotely historical (pre-historical, is suppose) speaks sad volumes about our society.i guess my one star may be a bit harsh. it's concievable that one could glean some amusement or light entertainment from this. but i feel a civic duty to in bring down the five star average it's garnered so far.
Example Output: Negative

Example Input: Inflates fast. Nice shape when inflated stores well. Guest are getting a good nights rest. Would reorder if we need more.
Example Output:
Positive