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

[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.
[A]: Negative


[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.
[A]: Positive


[Q]: Count me with the minority who found this book unreadable. It was incredibly dated with imagery very thin and sparse. I got lost in the pointless dialog and was unable to finish.
[A]:
Negative