Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Difficult writing?

I regrettably found this book to be disappointing in that the writing is most difficult to interpret. I realize that the author is attempting to represent the manner in which each of the characters might communicate but, forgive my lack of understanding, I was expecting a novel approach to the exploits of the "Corps of Discovery," not an exercise in translation. It was hard going and that's not what I expect in a historical novel.