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

Input: Consider Input: I ordered this DVD and received a substitute I never received the DVD I ordered from Importcds (the Vendor). I contacted them and did not recieve any feedback. I can't rate a DVD I have never seen. I didn't bother to send it back because it would have cost me more that I orginally paid for it. In the future I will watch for the name of the person and/or persons I am buying from. I thought they were a good company. I understand a simple mistake but, to not get a response at all is not good businees sense. I spend hundreds of dollars a month on Amazon.com building my DVD collection. I guess I will be more careful in the future.

Output: Negative

Input: Consider Input: I was expecting to read a book about the Amish. What I read instead was a very self centered book about a woman searching, rather blindly, I felt, for herself.She had very little in the way of insight into Amish life, even after spending a period of time with them. And her inability to get outside of her own head/her own life was not terribly interesting to read.For someone who always longed to be a 'star,' I am sure publishing a book was quite a thrill for her. Shame she used the Amish as a platform for her own ego.

Output: Negative

Input: Consider Input: A few years ago I bought a second hand copy of this book. During this time I must have read it at least once a year. I like it that much.It is a book about what humanity could aspire to become if we can put away the mistakes of the past and present.The arguments I've read that this is a unrealistic fantasy.... this is a book of fiction that portraits the thought and maybe the wishes of the author. You can agree with them or not.This is one of the few books that I would recommend to a beginning SF reader. It is not too difficult and a pleasure to read, and unlike many other books you are not left with a feeling of light depression because every main character died or had some other terrible fate happen to them.If you are interested in other works of Mr. Hogan I would recommend 'The Giant Novels' and 'The Genesis Machine'.
Output: Positive