Problem: United States Army:

The army's most common vehicle is the High Mobility Multipurpose Wheeled Vehicle (HMMWV), commonly called the Humvee, which is capable of serving as a cargo/troop carrier, weapons platform, and ambulance, among many other roles. While they operate a wide variety of combat support vehicles, one of the most common types centers on the family of HEMTT vehicles. The M1A2 Abrams is the army's main battle tank, while the M2A3 Bradley is the standard infantry fighting vehicle. Other vehicles include the Stryker, and the M113 armored personnel carrier, and multiple types of Mine Resistant Ambush Protected (MRAP) vehicles.

What does HMMWA stand for?
---
A: unanswerable

Problem: Age of Enlightenment:

French historians traditionally place the Enlightenment between 1715, the year that Louis XIV died, and 1789, the beginning of the French Revolution. Some recent historians begin the period in the 1620s, with the start of the scientific revolution. The Philosophes, the French term for the philosophers of the period, widely circulated their ideas through meetings at scientific academies, Masonic lodges, literary salons and coffee houses, and through printed books and pamphlets. The ideas of the Enlightenment undermined the authority of the monarchy and the church, and paved the way for the revolutions of the 18th and 19th centuries. A variety of 19th-century movements, including liberalism and neo-classicism, trace their intellectual heritage back to the Enlightenment.

In what year did the French Revolution begin?
---
A: 1789

Problem: Russian Soviet Federative Socialist Republic:

The final name for the republic during the Soviet era was adopted by the Russian Constitution of 1937, which renamed it the Russian Soviet Federative Socialist Republic.

What was Soviet Russia called as of 1973?
---
A: unanswerable

Problem: Estonian language:

The earliest extant samples of connected (north) Estonian are the so-called Kullamaa prayers dating from 1524 and 1528. In 1525 the first book published in the Estonian language was printed. The book was a Lutheran manuscript, which never reached the reader and was destroyed immediately after publication.

What was the first Estonian language book to be published?
---
A:
a Lutheran manuscript