Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DONT BUY MUST HAVE ACCESS CODE!!!

Most all teachers are going to require the access code which in most cases has already been used so you spend big buck on a used book then have to pay for the code which is in the $100's and with the code you get the virtual text on the website so if your allowed laptops or ipads and such you dont even need to buy the book!