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

[Q]: If you are of a certain age and experience, you already know about Dharma Bums.If you are of another certain age and experience, this book goes against everything taught by Saint Ronald Reagan, and so you should avoid it.If you are young, give this book a try. Better yet, instead of buying it, go to the local library to read it. Unless the people I described in my second paragraph have taken over and there are only Approved Books in the library...if there are libraries at all. Libraries cost money, and that means (shudder) taxes.For everyone else: this is Kerouak's best work.
[A]: Positive

[Q]: With the type of closures and the amount of compression it is meant to give it's really difficult to put on. You need a hand to pull it closed in order to actually be able to close each of the 20 some odd hooks.
[A]: Negative

[Q]: The product deflated during the night. We refilled and let sit with no one in it for a while and it still lost air. I was very disappointed as the product initially started great for my Aunt who would not have been able to be on the floor with a traditional air mattress. I am attempting an exchange hoping it was just this one item. Most of the reviews were glowing and I am hoping that the replacement will perform as the other reviews indicated.
[A]:
Negative