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

Ex Input:
At 60 pages,this is over-priced and not a course for adults. As basic instruction for those 10 and under, it is probably okay. For anyone who even doodles while talking on the phone- forget it!

Ex Output:
Negative


Ex Input:
What am I reviewing here... this gizmo or the supplier, Eforcity? I never received this product after my order! After waiting and waiting I contacted Eforcity several times -- no reply. After a nasty letter from me Eforcity'r reply feigned lacking information about my mailing address!What a cop-out.I told them I would not pay for it, so Eforcity said they'd give me a refund, which has not come to me yet. I bought another product to replace this from Amazon which arrived quickly from Amazon.

Ex Output:
Negative


Ex Input:
This book did give the reader some very interesting facts and folk lore about archaeological discoveries that could prove the existence of superior "giant" races in the Americas. The only thing I did not like about the book (except for the grammatical errors), was that the author would mention some dramatic event (such as the discovery of giants' bones in a mound) and leave the reader hanging after a couple of paragraphs about the find. This book could have easily been an entire set of volumes, should everything have been explained in detail. Overall, it was a very interesting book leaving the reader wanting to know more about certain discoveries and theories within the book.

Ex Output:

Positive