Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I lost interest waiting for something to happen

The book is extremely well researched and teaches the reader a lot about undersea mammals like whales, orcas and dolphins.Unfortunately the minutae of the main characters' pursuit of each other left me gasping about one-fifth of the way in and I put the book down.I was hoping for a whale's-eye view of the end of the world and I got an overly-detailed view of whale behavior instead.Sort of like if a Dean Koontz quest novel consisted largely of descriptions of how the car operated, whether the protagonists stayed at Days Inns or Motel 6's each night and the debates over choosing between McDonald's and Burger King. Every day.I kinda forgot where the book was going.The fact that this book has attracted only three reviews so far may be an indication of how many readers actually finished it.Good reviews from the trade notwithstanding, no matter how well-designed a car is, if it doesn't go anywhere it's just a big paperweight.