Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
This was followed by the creation of the first two Han Banners in 1637 (increasing to eight in 1642). Together these military reforms enabled Hong Taiji to resoundingly defeat Ming forces in a series of battles from 1640 to 1642 for the territories of Songshan and Jinzhou. This final victory resulted in the surrender of many of the Ming dynasty's most battle-hardened troops, the death of Yuan Chonghuan at the hands of the Chongzhen Emperor (who thought Yuan had betrayed him), and the complete and permanent withdrawal of the remaining Ming forces north of the Great Wall.
Who killed Yuan Chonghuan?
A: Chongzhen Emperor

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Believed to be a stowaway on a U.S. military transport near the end of World War II, the brown tree snake (Boiga irregularis) was accidentally introduced to Guam, that previously had no native species of snake. It nearly eliminated the native bird population. The problem was exacerbated because the reptile has no natural predators on the island. The brown tree snake, known locally as the kulebla, is native to northern and eastern coasts of Australia, Papua New Guinea, and the Solomon Islands. While slightly venomous, the snake is relatively harmless to human beings. Although some studies have suggested a high density of these serpents on Guam, residents rarely see the nocturnal creatures. The United States Department of Agriculture has trained detector dogs to keep the snakes out of the island's cargo flow. The United States Geological Survey also has dogs capable of detecting snakes in forested environments around the region's islands.
What was accidentally introduced into Guam?
A: brown tree snake

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The first documented visit by a European was in 1524 by Giovanni da Verrazzano, a Florentine explorer in the service of the French crown, who sailed his ship La Dauphine into New York Harbor. He claimed the area for France and named it "Nouvelle Angouleme" (New Angouleme).
Giovani da Verrazzano was an explorer from which country?
A: France

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
North Carolina State University is located in southwest Raleigh where the Wolfpack competes nationally in 24 intercollegiate varsity sports as a member of the Atlantic Coast Conference. The university's football team plays in Carter-Finley Stadium, the third largest football stadium in North Carolina, while the men's basketball team shares the PNC Arena with the Carolina Hurricanes hockey club. The Wolfpack women's basketball, volleyball, and gymnastics as well as men's wrestling events are held on campus at Reynolds Coliseum. The men's baseball team plays at Doak Field.
What is the largest stadium in North Carolina?
A:
unanswerable