Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Funny first half...

Three and a half stars would be more appropriate. I read this book as a part of a book club and thought it was an hilarious start. His friend Katz and their adventures were laugh-out-loud but just past the middle of the book Bryson travels alone and much of the humor subsides for Cliff Clavin-like tidbits.