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

[Q]: Bought this for my 5 year old Justice Leaguer. My son is not a rough player but we went through 4 (YES, FOUR) of them before we finally got one where the elevator didn't break in the 1st 2 weeks. Mattel needs to get their act together and design toys that have durability. VERY disappointing!
[A]: Negative


[Q]: just for the record: last day off my vacation in mexico and i dived into the Carraibean with my digital camera into my pocket :) (don't ask why) and althogh the camera is now mearly scrap (pentax optio s) the memory card works fine and i didn't lost any of my vacation photos with would have been a lot worse - so SD cards are water proof and salt water proof :)
[A]: Positive


[Q]: We met Dr. Smith when recently in the Amazon in Peru. She cured my husband's plantar fascitis with a shot of lidocaine which we feel enabled him to walk properly and thus stretch the fachitis. It cost 25cents for the lidocaine and needle and he had spent way more of that in the States with a cordisone shot,MRI, special night boot, creams to rub on his foot, etc. In any event we love this woman and have begun a correspondence with her and her foundation. Her book tells how she left a thriving practice in Wisconsin to come to the Amazon and open a clinic. She is a very special lady. Her story moves quickly and is interesting. If you ever were tempted to do good in the world this woman takes you step by step on her journey. Truth is often better than fiction.
[A]:
Positive