Instruct: Classify Amazon reviews into positive or negative sentiment
Query: May be a fun sci-fi movie, but it is not Battlefield Earth

Very disappointing. I am a sci-fi fan for many years. I may have enjoyed this movie. But Battlefield Earth is a great book, and this movie does it such an injustice, it is indescribable. When the movie first came out I read movie critic's reviews that spoke badly about the book based on their seeing the movie. It seemed obvious to me the critics I read had never read the book. They couldn't have. Again, as a sci-fi movie, you may enjoy it. But as a depiction of the book, this movie is very, very bad. Very disappointing.