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

[EX Q]: I just plugged it in and it's on the job. Perhaps it would be more assuring if it had a digital read-out of level of monooxide in the air.
[EX A]: Positive

[EX Q]: This thing is a major piece of junk. It doesn't stick to the wall like it claims. You have to stand to play with it (cause all the cool stuff is at the top), and the extension pieces constantly fall off. I actually screwed it to the wall, but that lasted a whole 10 minutes as it wouldn't stay screwed into the wall. Then the scenery kept falling. Save your money and buy the cool batmobile or something.
[EX A]: Negative

[EX Q]: I thought this product would be great, and help out my kids a lot!! My daughter hates it and it is so confusing. We can't find a lot of just regular songs. It is easier just to call the radio station and find out yourself.
[EX A]:
Negative