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

[Q]: 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.
[A]: Negative

[Q]: Comfortable right out of the box. Well made. Durable. Can't vouch for the waterproofing of them, as I have learned many moons ago.....no shoes are waterproof. I refuse to test them, once you do...they never seem to be the same.
[A]: Positive

[Q]: Jabra directed me to these as a replacement for the lost pieces for my Wave. THESE ARE NOT what I need. Meh. Gonna be two more weeks before I get home to return them.I don't blame the merchant, blame Jabra for directing me to waste weeks buying, waiting for, and returning the wrong stuff. Swedish morons
[A]:
Negative