Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Interesting book

Well the whole reason I read this book is because it's about my great grandmother. Katherine Cross really existed. Not sure if this story is based entirely on fact but that remains to be a mystery. You can be the judge of what you think really happened when you read the story. It's a good book. A very easy read. It's not at all what I expected it to be though, but not a bad surprise either.