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

[Q]: I ordered Alter Ego for men but got Alter Ego for woman. I followed the procedure given on the the web to complain and ask how to do the return, but did not get any answer.
[A]: Negative

[Q]: Very intuitive in explaining the basic concepts and the fundamental and widely used methods in continuous-time finance. No deep background in math is required to have a good grasp of this book. I believe it is intuition rather than fancy skills that is important to build up interest and passion for studying a hard topic such as continuous-time finance.
[A]: Positive

[Q]: This book, was far too long, and was not at all appealing. The length of the book, bored me to tears, and was too hard for people unfamiliar with his work (i am though somewhat familiar but still his theories made no sense to me and lacked relevance in my life). The book went into painstaking great detail describing dreams and interpretations. His theories and interpretations were intriguing, and informative, but lacked any research to back up his theories.
[A]:
Negative