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

Q: My wife is very happy with this set of dishes that we recently purchased through Amazon.com. They are everything she had hoped and expected them to be. My happiness is more related to the purchasing experience. One dish arrived broken and I was very pleased with the efficient, fast and convenient way you handled the replacement. Thanks for a good buying experience.Bob Cordes

A: Positive
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Q: After repeated washings, it still smelled like a toxic plastic and who wants to put toxic plastic inside their body. Also, it didn't do the job. So I wasted my money and had to throw it away.

A: Negative
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Q: Foundation is the complete book of adventure. Brilliantly written by Asimov (as usual). This book is a must-read for all readers!

A:
Positive
****