Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Awesome history for an awesome sport!!!

Captain Johnson has obviously put in a ton of time researching an awesome ultra-extreme sport. His ambition may be his undoing however, because I believe the more he researches, the more he'll find that he can add to this already hefty project. I can't wait to see how this book grows over the years as he adds yearly results and unearths other "lost" swims. I am also proud that he has decided to leave out the dubious efforts of "cage swimmers" and other kooks who claim to be swimming with other aids such as fins and wetsuits. I higly recommend this book to swimmers and non-swimmers who enjoy reading about lofty human endeavors!