Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I regret buying for Kindle

I'm sorry I bought the Kindle edition of this book.First, as was warned, Lincoln is not here. Incredible. What else is missing?Second. Okay, there's an index. I expect it from a book like this. It helps browsing (you might disagree). But try Angels: are painted. Click the page number. The link is to page 183 as I remember. The quotation is not there! In fact it's 50-odd pages back. An index that does not index is a fraud.[...]