Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Answer Keys not available for independent study in Canada

Customers in Canada should be aware that despite the blurb inside the front cover (which states that an Answer Key is "available to... persons engaged in independent study"), HarperCollins Canada will not send Answer Keys to individuals who wish to use this workbook to learn Latin on their own. I contacted the company 5 months ago to request an Answer Key, only to be told that HarperCollins would only provide Answer Keys to those who were affiliated with a university. When I read them what they had printed inside the cover of the workbook, they agreed to send an Answer Key, but they never did. Instead, they have only made constant excuses for their failure to deliver this Answer Key, promising me again and again that the book is on its way; clearly, it is not. Without an Answer Key, this workbook is useless to anyone wishing to pursue independent study. If this is your goal, do not purchase this book.