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

Example Input: This is one of those films where more emphasis was placed on the aerial dogfight sequences -- little or no thought went into the plot or acting.What a lame excuse for a movie. My biggest complaint of this movie is that it's so cliche you could cut it with a knife. The role of Texan Blaine Rawlings, who flits off at a moments notice to be with his new love, is beyond belief or plausability. The rest of the acting ensemble, other than Capt. Thenault (Jean Reno), were window dressing in this piece of movie dribble. And the dreaded German Ace was hardly more than a voyeur who wanted to savor his victory by the sight of his victim's face before they died.Lame plot, poor acting, dubious historical accuracy, wrapped around some nice dogfight sequences. What a shame, as I had hoped for better than this.Don't buy this turkey. Save your money and get "Dogfight" -- more accurate, exciting, and historically true.
Example Output: Negative

Example Input: My husband and I were not able to attend a birthing class, so the doctor suggested we rent/buy a video. We decided on this one, and although the 'teacher' was a bit corny it was helpful. I especially liked that you could fast forward and skip parts! All in all it was a worthwhile purchase and proved helpful to us both.
Example Output: Positive

Example Input: Koontz can write. But he sucks as a story teller. Books are supposed to have a COMPLETE story in them, no? Well this one has no ending. No end at all. These 2 detectives are clued in to the fact that Dr Frankenstein exists, and is creating his "perfect race" to some day kill off all humans. That's it. You meet the original, now educated and "at one with the universe" Frankenstein's monster, you meet the main characters, and they have some conflict. That's the whole "story" in this book, which it really isn't because the basic elements of a story are a beginning, middle, and end.
Example Output:
Negative