Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
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Question: The title of this video mentions Argentine Tango. Unfortunately, what is being taught on this tape is not authentic Argentine Tango. Not even close. It's ballroom tango. There is a huge difference: in music, style, steps, posture, etc... Don't be fooled by ballroom instructors trying to teach Argentine Tango. The only authentic instruction available on the market comes from authentic Argentine instructors from Buenos Aires.

Answer: Negative


Question: Good, sturdy platform for squatting under a barbell. Very firm. Laces are long enough to wrap around ankles, and back of shoe forms a fair notch to retain the laces and keep them from sliding up and off the shoes - would have been better had there been a rear loop. Shoes are better without the insoles because they put a spongy foam wedge under the heels. I replaced them with thin flat insoles from a pair of water shoes. One could cut the foam wedge and use the included insoles. There is no raised heel other than that foam wedge. They run true to size or slightly tight.

Answer: Positive


Question: As light weight sci-fi/horror anthologies go this is probably good value for money (given its low price), but the apparent lack of good editing and of proper proof reading is painfully evident and you definitely won't find any candidate for a Hugo or Nebula award.You'll find a couple of interesting ideas, a lot of trite and derivative ones and occasionally some baffling lack of coherent character development.There's enough to show that Messrs. Jason Brannon, Eric S. Brown and John Grover have the potential to write something good, but it seems to be, at the moment at least, unfulfilled potential.

Answer:
Negative