Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A Tour De Force

The author takes the reader on an informative journey through the Russian Revolution. Much of the text is devoted to elaborations, justifications, and explanations of persons and events, and this can be soporific, especially if you aren't caught up on your sleep. But if you forge ahead, you will be well rewarded. Colorful and historically important characters like Nicholas II, Lenin, Stalin, Trotsky, and Gorky are brought to life with insight, along with the important events they take part in. A large supporting cast, with characters like Alexandra, Rasputin, Kerensky, General Brusilov, and Prince Lvov add to the dramatic saga, highlighted by many tasty anecdotes.You get only a few, unremarkable maps, but you get many photos, and they are good."A People's Tragedy" is a great accomplishment, and a reading of it will enrich you.