Instruct: Classify a review into positive or negative sentiment.
Query: I read it in three days!

Unbelivable book. I couldn't put it down. I have been a horse racing fan since I was a kid, thanks to a dad that brought me to the track as a young girl. I actually bought this book for my dad for Christmas, but decided to read it first before I gave it to him. This book is rich with detail you feel like you know the characters and have a front seat at all the races. The research that went into this book is exhaustive and you can tell Laura truly cares about her subjects. For anyone on the fence about getting this book b/c they don't know about horse racing, let me assure you this book is simply not about a horse, but instead about amazing people that came together for the love of horses, racing, and the American dream. You will not be disappointed.