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

Example Input: While this movie was not "highly acclaimed" when it was released, back in the late 1960's or early 70's "I think," I have always like it and watch it about once every two or three years. It is the kind of movie that you never get "fully bored with."On a scale of 1-5 stars, I give it only four (4) stars, since it is one of those movies that many "action junkies" would not like; even-though, it actually has quite a bit of "lower key action" and beautiful phototgraphy to support it.My bottom line is: "If you liked Dr. Zhivago then you will, or should, like Ryan's Daughter."
Example Output: Positive

Example 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.
Example Output: Negative

Example Input: This book is a modern retelling of Sleeping Beauty with an emphasis on the power of family to help a boy through a terrible time. It is best suited for a mature, inquisitive child. War is a reality that parents should not shy away from talking about to their children.
Example Output:
Positive