instruction:
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
question:
I have just spent 5 minutes trying to get this damn printer to print an envelope without mangling it. Wonderful.
answer:
Negative

question:
I haven't been able to watch this much because the DVD won't play in my normal (otherwise functioning) DVD player. It will play on my computer's DVD player, but without sound. The DVD will play fine on my laptop, but that's not a screen that's very conducive to practicing in front of. The DVD does play on my friend's DVD player for some reason. Also, I bought volumes 1 and 2 and both are so short, it seems obvious that they could have put all of the lessons on one DVD. I guess they knew they could make more money by making us buy both.
answer:
Negative

question:
I received this air mattress and was very impressed at first. It's only been a couple of months with sporadic use by an average size/weight person and it's now unuseable. Two of the seams along the top of the mattress have now "popped" so that the top of the mattress is 1/2 big bulge and 1/2 normal. There's no reason this should've happened. When only 1 seam popped it was still ok, but with 2 gone we have to throw it away.
answer:
Negative