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

[EX Q]: The product seemed like a good idea but wish I had read all of the reviews before ordering. The product is not sturdy at all. It didn't come with the number of screws noted on the instructions so I had to go out and purchase more in order to finish putting it together. That was after I spent way to much time trying to decipher the instructions. Also, the clips that hold the bag to the frame are very tight and very difficult to put on and remove. I've torn every bag I've used. I hate wasting my money; but, I'll have to buy a better one.
[EX A]: Negative

[EX Q]: I've reviewed a couple of other Waechtersbach items, and I'm quite happy with these as well! I have only two minor complaints. First, on these, the glaze seems to be scratching (utensils?) more than the other Waechtersbach products I have...my plates and cereal bowls aren't doing that. Second, all four of them had a funny little bump on the outside rim...it looked identical on all four. Maybe a slight manufacturing defect? The glaze is slightly darker around the bump, so you can see it, though it's not overly obvious. But overall I love them - they're great for soups and pasta (spaghetti especially). They're holding up quite well in the dishwasher, too - no chips or cracks, despite how they sort of lean against one another. Very pleased!
[EX A]: Positive

[EX Q]: This book is bad (period). It is very incoherent and ill-organized. The examples are vague and serve anything but support the material. Very theoritical with hardly any real life applications. Lacking in modern AI topics/game design.
[EX A]:
Negative