Instruct: Classify a given review into positive or negative sentiment.
Query: The Only One!

This may, indeed, seem trite, but if you only buy one book about "guns," this is the one that you should buy. Many, no doubt, say that "Boston" is very pro-rights, and this is true. However, if you were trying to learn about Fords, would you buy a book written about them by a dedicated Chevy man? Boston brings to the keyboard a fascinating mix of information, stories, first hand experience, quotes, and references that are almost staggering in their volume. This is, however, the main reason that you should buy this tome. It will stand on your bookshelf as a reference manual for quite a period of time to come. You will constantly refer to it for the little questions that keep cropping up constantly over the years. It is undoubtably the only book on the subject that you will ever need.