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

[EX Q]: I enjoy this book very much. It is a timely classic with which I am happy to now have my own copy.
[EX A]: Positive

[EX Q]: I bought this for a friend for her birthday and it didn't have a picture posted but from the description I figured it was the old version without the scary lady on the cover but it wasn't. Oh well.
[EX A]: Positive

[EX Q]: very informative, content was well structured, though the instructor is a self-declared "comedian" with only a couple people laughing out of obligation. it was painful. this made me glad that i didn't attend a childbirth class (and bought this instead).i also could have done without the Viacord plug... it's like a commercial took over the ending of the program to spoil it.all things considered, definitely worth watching.
[EX A]:
Positive