instruction:
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
question:
By something else. This is the worst piece of machinery I have ever bought. Virtually impossible to cut any size tile on the diagonal. Typical imported junk!!!!!
answer:
Negative

question:
Ordered two and tested them out: one had a bad pump but the return was easy.These airbeds are super cheap and great. Everyone who has slept on them says they are extremely comfortable. They hold the air well. I recommend them very highly
answer:
Positive

question:
I bought this CD originally when I was in junior high, to accompany me while I practiced my saxophone (I preferred to practice to Beach Boys music over the school fight song). Anyway, it's also good for karaoke. However, be careful listening to the previous reviewer, who either can't count or has a different CD. There are 15 tracks on the CD, which last I checked is *not* over 20.
answer:
Positive