Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Fills A Gap in the Titanic Literature

The major emphasis of the book is the United States Senate investigation into the wreck of the R.M.S. Titanic and focuses on the efforts of Senator William Alden Smith (R-Mich.), who chaired the investigative subcommittee. The book describes the thoroughness and determination of Senator Smith as he conducted the investigation and goes to great lengths to demonstrate that the United States investigation was equal to or better than the one conducted in the United Kingdom.The major flaw in the book is its attempt to do double duty as a biography of Senator Smith. The book also contains minor factual errors that could have been weeded out by more careful proof-reading.