Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Bikes and good beer; a natural combination

The book was extremely useful to introduce me to the world of high quality beer and hidden trails to ride free of traffic.Mr. Mercer explains everything very clearly and gives you an honest opinion about good places to ride and to enjoy a beverage, including directions, prices and ambiance.I have been riding road bikes for many years, but Bike and Brew America has inspired me to try to go back to nature and explore hidden trails.An extra good feature is all the possible updates available through the website that Mr. Mercer gives you in his book.A very good book. I highly recommend it.