Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful book

Since I bought this book, I've been able to develop much more sophisticated financial models. There's a lot of really useful info in this book: corporate, portfolio, options, bonds, and more.It's not only the modeling skills for corporate models which are helpful; I've also for the first time been able to figure out the literature on portfolio and option modeling.Thank you, Simon Benninga, for writing such a good book!