Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Jaws was based on these events

This is a riveting tale whose events led to the creation of Jaws. Fernicola clearly and brilliantly tells this historical tale such that the book must be read in 1 sitting. This book, unlike others which attempt to tell this story of actual events, is based upon the author's meticulous research which even included interviewing the last of the surviving witnesses. It is a must have.