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

[EX Q]: We had to buy a new lunchbox for our son after 2 months (a different brand, machine-washable) because this one is way too hard to clean. I have turned it completely inside out, scrubbed between all the cracks, and still food is stuck in the seams andthreads. It is very durable, but we can't get rid of the smell or stains with a reasonable amount of effort.
[EX A]: Negative

[EX Q]: My husband and I are expecting our first baby any day now. We opted to get a childbirth video versus attending a class. After doing some research and getting reccomendations from friends, I decided to purchase this video. While the information on the DVD is helpful and each segment is clear and easy to understand, the instructor presented it in such a way that made extremely painful to watch.The instructor continuously makes annoying jokes, mocks pregnant women and their partners, using the most unfunny and unflattering impersonations imaginable. Watching this woman's attempt stand-up routine was so uncomfortable that we often found ourselves fast forwarding through a lot of it. Please believe that neither me or my husband laughed during this DVD. Not once.I wish we had just gone to childbirth class.
[EX A]: Negative

[EX Q]: The Pitchshifter sound that has been forged over their last 5 or so releases, culminating wonderfully with "www.pitchshifter.com" has here been stripped to a watered-down sound that could have come from any of 1,000 other bands who are wasting our time (and money) these days. The Pitchshifter formula of brutal guitars mixed with programed drums and other industrial and electronic affects was unlike anything else on the musical scene. That sound is completely gone on this CD--reducing their punishing onslaught to something that MTV would have little problem broadcasting. A very disappointing CD.
[EX A]:
Negative