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

Ex Input:
Do not buy this toy. If you are given this toy as a gift, return it for store credit. This is a flimsly and poorly designed stack of platic and paper. The secret door doesn't work, the elevator doesn't slide and toys get stuck in there. The suggested 10" batman doesn't work with the zip line, bungee or even the elevator. The add says "Using new adhesive technology, you can set up the Batcave on just about any wall" so they want us to glue this thing on to a wall.Please don't buy this toy.

Ex Output:
Negative


Ex Input:
Experienced no problems with the order. The book came within the estimated delivery date. The book matched the description given.

Ex Output:
Positive


Ex Input:
I was recently in dallas and visited the gypsy tea room where this band was playing. The band only had one good song and it was only good due to the guitars. the lead singer has a bad voice and at the end of the performance he says to the crowd "thanks for coming to see me play". he said this to the 40 people still there. anyway i noticed he had 3 other people on stage that were BAND MEMBERS. I could tell that the drummer was ticked about that comment and was overheard saying"he, the lead singer, has lost his focus".sad very sad

Ex Output:

Negative