Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
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Question: Well another one of my first dvd purchases...I found this concert very poor...it did nothing for me... the sound quality was poor, The set on stage was quite good but lacked the final sparkle, Janet's performance was glitzy... but sadly something was missing...my advice is puchase Janet's later DVDS...

Answer: Negative

Question: I bought this air mattress to use while my new bed was being shipped from back east, the bed lost air every night and I woke up almost on the floor. I tried to send it back but it was impossible to get back into the box.

Answer: Negative

Question: YOU HAVE TO SEE HOW SCARY LOOKING THE PICTURES ARE IN ALL OF THE BOOKS!!!! THAT COULD DEFINETELY GIVE YOU NIGHTMARES FOR A WHILE.EVEN IN SOME STORIES. THERE WAS NOT A PICTURE OF THE WENDINGO, BUT THE BACK OF THE BOOK SAID IT WAS A FEMALE SPIRIT, AND/OR A CANNIBAL GIANT THAT KILLS FOR HUMAN FLESH AND ANTHROPOLOGISTS DESCRIBED INDIANS WANTING TO EAT FLESH AS A "WENDIGO PSYCHOSIS". {I'm sure that's how you spell that word}.

Answer:
Positive