Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
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Question: An exellent study of the German Airforce from the fall of Sevastopol in the Crimea to its failure at Stalingrad. Very well written, with a clear analysis of the events. Well worth the money and it belongs in every major collection on World War II's Eastern Front.

Answer: Positive

Question: This book contains such advise as writing down personal affirmations which you will repeat to yourself at the beginning of each day:I am calm, prepared, and entertaining.I am fit and beautiful.I am humble, patient, and compassionate.I am enough, just the way I am.If this kind of advise is your cup of tea, then this is your kind of book.

Answer: Negative

Question: I tried these Jobst 15-20 mmHg pantyhose in my search for high quality therapeutic support pantyhose for a severe circulation problem in one of my legs. I did find them a little difficult to put on, but once they were on they stayed in place nicely and provided great support.The only problem I had was, like the other review stated...they ran the second time I wore them. For as expensive as these pantyhose are, they should last longer than 2 wearings.They are not too sheer, if that is something you are looking for in support hose. They look more like tights when they are on your legs. I did find the beige shade to be a little more like a pale nude shade.

Answer:
Negative