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

Example Input: Bought at Home Depot for $199. It is a toy, not suitable for serious work. Flimsy contruction, difficult or impossible to adjust. Recommend getting a brand name.
Example Output: Negative

Example Input: I really enjoyed this book!I couldn't put it down after the first page which compares Marshall, "An average North American Male" ... "plump and balding", to his caged pet bird - "Both had lived three fourths of their expected life span and had another fourth of life to go, if they were lucky".This sets the tone for the novel which is a thought provoking story written with wit and intelligence.I should note, however, this is not and it is a book about the character Marshall Hollenzer. It is really a book about people - the choices they make and/or the fate bestowed upon them - and journeys - both physical and spiritual.This novel is thought provoking, entertaining, and enlightening.I recommend buying at least two copies - this is the type of book that you will want to share with people you know.
Example Output: Positive

Example Input: This is among the first Ellington CDs I owned, and remains among my favorites. It presents a nice survey of earlier material, with many of his greatest hits as well as some less familiar tunes (i.e., ones you don't find on every collection of early Duke). Ivie Anderson's vocals really shine, especially on "It Don't Mean a Thing (If It Ain't Got That Swing)". Not every song was destined for greatness, but the lyrics to "Love is Like a Cigarette" are a hoot! The sound is decent considering the age of the recordings.
Example Output:
Positive