Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
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Question: Altough the content on childbirth is descriptive (at times a bit too descriptive), the commentator/director Sheri Bayles is one of the most annoying, irritating, wanna-be-actresses that my husband and I have ever seen. Her approach to teaching by injecting humor is painful, and it took all of our strength to not plug our ears and cover our eyes to watch this woman. If you can handle obnoxious, loud and nerdy instructors, then you may enjoy this DVD. The 5 couples she works with in the instruction look bored and confused.

Answer: Negative


Question: I purchased for my guest room for overnight stays for family members.this holds up very well especially for grandchildren

Answer: Positive


Question: Chaos is such a visually stunning field of study, since you invariably run into those computer generated figures of Julia sets or random fractal landscapes or cloud formations.But can we get a rigorous, first principles explanation that is broadly accessible to undergraduates with good, but not advanced math preparation? Well, you might consider this recent book. The authors have gone to some length to explain events without appealing to more than simple calculus.Nothing flashy. But you can obtain a good understanding of fractal dimensions, self iterating systems (like a Sierpinski gasket) and noise.

Answer:
Positive