Problem: Please answer a question about the following article about Sumer:
Although short-lived, one of the first empires known to history was that of Eannatum of Lagash, who annexed practically all of Sumer, including Kish, Uruk, Ur, and Larsa, and reduced to tribute the city-state of Umma, arch-rival of Lagash. In addition, his realm extended to parts of Elam and along the Persian Gulf. He seems to have used terror as a matter of policy. Eannatum's Stele of the Vultures depicts vultures pecking at the severed heads and other body parts of his enemies. His empire collapsed shortly after his death.
What did Eannatum use to keep the people of the time in line?
A: terror
Problem: Please answer a question about the following article about Hanover:
"Hanover" is the traditional English spelling. The German spelling (with a double n) is becoming more popular in English; recent editions of encyclopedias prefer the German spelling, and the local government uses the German spelling on English websites. The English pronunciation /ˈhænəvər/, with stress on the first syllable and a reduced second syllable, is applied to both the German and English spellings, which is different from German pronunciation [haˈnoːfɐ], with stress on the second syllable and a long second vowel. The traditional English spelling is still used in historical contexts, especially when referring to the British House of Hanover.
Which spelling of Hanover is used in historical contexts?
A: traditional English spelling
Problem: Please answer a question about the following article about Mandolin:
The Sydney Mandolins (Artistic Director: Adrian Hooper) have contributed greatly to the repertoire through commissioning over 200 works by Australian and International composers. Most of these works have been released on Compact Disks and can regularly be heard on radio stations on the ABC and MBS networks. One of their members, mandolin virtuoso Paul Hooper, has had a number of Concertos written for him by composers such as Eric Gross. He has performed and recorded these works with the Sydney Symphony Orchestra and the Tasmanian Symphony Orchestra. As well, Paul Hooper has had many solo works dedicated to him by Australian composers e.g., Caroline Szeto, Ian Shanahan, Larry Sitsky and Michael Smetanin.
Who has had many Concertos written for him? 
A: mandolin virtuoso Paul Hooper
Problem: Please answer a question about the following article about Modern history:
In Asia, various Chinese dynasties and Japanese shogunates controlled the Asian sphere. In Japan, the Edo period from 1600 to 1868 is also referred to as the early modern period. And in Korea, from the rising of Joseon Dynasty to the enthronement of King Gojong is referred to as the early modern period. In the Americas, Native Americans had built a large and varied civilization, including the Aztec Empire and alliance, the Inca civilization, the Mayan Empire and cities, and the Chibcha Confederation. In the west, the European kingdoms and movements were in a movement of reformation and expansion. Russia reached the Pacific coast in 1647 and consolidated its control over the Russian Far East in the 19th century.
Name one of the tribes Native Americans formed in the Americas?
A:
Aztec Empire