Instruct: Classify a given review into positive or negative sentiment.
Query: Mr. Sanford's book is very disappointing

Very disappointing. Costs much more than the book is worth. It is 149 pages of large print and many pictures. There is too much about the author's life and not enough about Mr. MacArthur.The section about MacArthur's rise to wealth adds nothing to an earlier book about MacArthur called "The Stockholder". The information in both books is sketchy and incomplete.There is almost nothing about MacArthur's wives or children.I think that the information about MacArthur's cause of death is incorrect. The author cites pancreatic cancer but I think it was lung cancer which killed MacArthur.No one to-date has written a thorough biography of the life of this fascinating man.