Problem: Central African Republic:

During the 16th and 17th centuries slave traders began to raid the region as part of the expansion of the Saharan and Nile River slave routes. Their captives were slaved and shipped to the Mediterranean coast, Europe, Arabia, the Western Hemisphere, or to the slave ports and factories along the West and North Africa or South the Ubanqui and Congo rivers. In the mid 19th century, the Bobangi people became major slave traders and sold their captives to the Americas using the Ubangi river to reach the coast. During the 18th century Bandia-Nzakara peoples established the Bangassou Kingdom along the Ubangi River.

When did the slave trade hit the CAR region?
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A: 16th and 17th centuries

Problem: From seasons four to seven and nine, the twenty-four semi-finalists were divided by gender in order to ensure an equal gender division in the top twelve. The men and women sang separately on consecutive nights, and the bottom two in each groups were eliminated each week until only six of each remained to form the top twelve.
How many men were in the top twelve on season five of American Idol?
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Answer: six

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
KU is home to the Robert J. Dole Institute of Politics, the Beach Center on Disability, Lied Center of Kansas and radio stations KJHK, 90.7 FM, and KANU, 91.5 FM. The university is host to several museums including the University of Kansas Natural History Museum and the Spencer Museum of Art. The libraries of the University include the Watson Library, Spencer Research Library, and Anschutz Library, which commemorates the businessman Philip Anschutz, an alumnus of the University.
What part of KU serves students not learning about government?
A: unanswerable

Context and question: In nature, uranium(VI) forms highly soluble carbonate complexes at alkaline pH. This leads to an increase in mobility and availability of uranium to groundwater and soil from nuclear wastes which leads to health hazards. However, it is difficult to precipitate uranium as phosphate in the presence of excess carbonate at alkaline pH. A Sphingomonas sp. strain BSAR-1 has been found to express a high activity alkaline phosphatase (PhoK) that has been applied for bioprecipitation of uranium as uranyl phosphate species from alkaline solutions. The precipitation ability was enhanced by overexpressing PhoK protein in E. coli.
What is BSAR-2 a strain of?
Answer: unanswerable

Question: "Digimon" are "Digital Monsters". According to the stories, they are inhabitants of the "DigiWorld", a manifestation of Earth's communication network. The stories tell of a group of mostly pre-teens, who accompany special Digimon born to defend their world (and ours) from various evil forces. To help them surmount the most difficult obstacles found within both realms, the Digimon have the ability to evolve (Digivolve) In this process, the Digimon change appearance and become much stronger, often changing in personality as well. The group of children who come in contact with the Digital World changes from series to series.
Is there an answer to this question: What children stay the same from series to series?

Answer: unanswerable

Charleston's oldest community theater group, the Footlight Players, has provided theatrical productions since 1931. A variety of performing arts venues includes the historic Dock Street Theatre. The annual Charleston Fashion Week held each spring in Marion Square brings in designers, journalists, and clients from across the nation. Charleston is known for its local seafood, which plays a key role in the city's renowned cuisine, comprising staple dishes such as gumbo, she-crab soup, fried oysters, Lowcountry boil, deviled crab cakes, red rice, and shrimp and grits. Rice is the staple in many dishes, reflecting the rice culture of the Low Country. The cuisine in Charleston is also strongly influenced by British and French elements.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Charleston is known for what type of food?
Ah, so..
seafood