In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.

[EX Q]: Context: Lautenbach (Ablach) is a river of Baden-Württemberg Germany.
Question: The document can be classified to which topic? 
Options: 1)MeanOfTransportation, 2)Film, 3)WrittenWork, 4)NaturalPlace, 5)Company
[EX A]: 4

[EX Q]: Context: Omnipotent Government: The Rise of the Total State and Total War is a book by Austrian School economist Ludwig von Mises first published in 1944 by Yale University Press. It is one of the most influential writings in Libertarian social thought and critique of statist ideology and socialism examining the rise of Nazism as an example. The book treats Nazism as a species of orthodox socialist theory.
Question: The document can be classified to which topic? 
Options: 1)Film, 2)Artist, 3)Athlete, 4)WrittenWork, 5)NaturalPlace
[EX A]: 4

[EX Q]: Context: Helmet for My Pillow is the personal narrative written by World War II United States Marine Corps veteran author and military historian Robert Leckie.
Question: The document can be classified to which topic? 
Options: 1)Company, 2)Building, 3)Plant, 4)WrittenWork
[EX A]:
4