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

[EX Q]: I ordered this DVD & several others as presents. They all arrived in good shape & on time for Christmas morning.
[EX A]: Positive

[EX Q]: I could not give this book a full 5 starts. For whatever reason, the book seemed to "bog-down" and I just wanted it to end. I will continue to read the series, but this one was not my favorite.
[EX A]: Positive

[EX Q]: Just a great item. However there are approximately 5 length-wise seams on the bottom to create stability. After two months, one seam "disappeared, and now the bed rocks, because there is one large air space.I can probably live with it, just have to put some towels, whatever to stabilize it.
[EX A]:
Negative