Problem: Please answer a question about the following article about Alfred North Whitehead:
At the time structures such as Lie algebras and hyperbolic quaternions drew attention to the need to expand algebraic structures beyond the associatively multiplicative class. In a review Alexander Macfarlane wrote: "The main idea of the work is not unification of the several methods, nor generalization of ordinary algebra so as to include them, but rather the comparative study of their several structures." In a separate review, G. B. Mathews wrote, "It possesses a unity of design which is really remarkable, considering the variety of its themes."
What did reviewer GB Mathews say algebraic structures possessed? 
A: unity of design
Problem: Please answer a question about the following article about Qing dynasty:
From the early Qing, the central government was characterized by a system of dual appointments by which each position in the central government had a Manchu and a Han Chinese assigned to it. The Han Chinese appointee was required to do the substantive work and the Manchu to ensure Han loyalty to Qing rule. The distinction between Han Chinese and Manchus extended to their court costumes. During the Qianlong Emperor's reign, for example, members of his family were distinguished by garments with a small circular emblem on the back, whereas Han officials wore clothing with a square emblem.
What shape of emblam signified members of the royal family?
A: circular
Problem: Please answer a question about the following article about Korean War:
By 1 October 1950, the UN Command repelled the KPA northwards past the 38th parallel; the ROK Army crossed after them, into North Korea. MacArthur made a statement demanding the KPA's unconditional surrender. Six days later, on 7 October, with UN authorization, the UN Command forces followed the ROK forces northwards. The X Corps landed at Wonsan (in southeastern North Korea) and Riwon (in northeastern North Korea), already captured by ROK forces. The Eighth U.S. Army and the ROK Army drove up western Korea and captured Pyongyang city, the North Korean capital, on 19 October 1950. The 187th Airborne Regimental Combat Team ("Rakkasans") made their first of two combat jumps during the Korean War on 20 October 1950 at Sunchon and Sukchon. The missions of the 187th were to cut the road north going to China, preventing North Korean leaders from escaping from Pyongyang; and to rescue American prisoners of war. At month's end, UN forces held 135,000 KPA prisoners of war. As they neared the Sino-Korean border, the UN forces in the west were divided from those in the east by 50–100 miles of mountainous terrain.
How many North Korean prisoners of war were held by UN forces?
A: 135,000
Problem: Please answer a question about the following article about Richmond, Virginia:
The city of Richmond operates 28 elementary schools, nine middle schools, and eight high schools, serving a total student population of 24,000 students. There is one Governor's School in the city − the Maggie L. Walker Governor's School for Government and International Studies. In 2008, it was named as one of Newsweek magazine's 18 "public elite" high schools, and in 2012, it was rated #16 of America's best high schools overall. Richmond's public school district also runs one of Virginia's four public charter schools, the Patrick Henry School of Science and Arts, which was founded in 2010.
Where was Richmond's Governor's School rated by Newsweek in 2012?
A:
16