Problem: San Diego:

Historically home to the Kumeyaay people, San Diego was the first site visited by Europeans on what is now the West Coast of the United States. Upon landing in San Diego Bay in 1542, Juan Rodriguez Cabrillo claimed the entire area for Spain, forming the basis for the settlement of Alta California 200 years later. The Presidio and Mission San Diego de Alcala, founded in 1769, formed the first European settlement in what is now California. In 1821, San Diego became part of the newly-independent Mexico, which reformed as the First Mexican Republic two years later. In 1850, it became part of the United States following the MexicanAmerican War and the admission of California to the union.

What native people lived in the San Diego area before the Mexicans arrived?
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A: unanswerable

Problem: The last ruler to maintain united state was Mstislav the Great. After his death in 1132 the Kievan Rus' fell into recession and a rapid decline, and Mstislav's successor Yaropolk II of Kiev instead of focussing on the external threat of the Cumans was embroiled in conflicts with the growing power of the Novgorod Republic. In 1169, as the Kievan Rus' state was full of internal conflict, Andrei Bogolyubsky of Vladimir sacked the city of Kiev. The sack of the city fundamentally changed the perception of Kiev and was evidence of the fragmentation of the Kievan Rus'. By the end of the 12th century, the Kievan state became even further fragmented and had been divided into roughly twelve different principalities.
What became less fragmented?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Some new immigrants arrived as refugees with no possessions and were housed in temporary camps known as ma'abarot; by 1952, over 200,000 immigrants were living in these tent cities. During this period, food, clothes and furniture had to be rationed in what became known as the Austerity Period. The need to solve the crisis led Ben-Gurion to sign a reparations agreement with West Germany that triggered mass protests by Jews angered at the idea that Israel could accept monetary compensation for the Holocaust.
How many immigrants lived in these tent cities?
A: over 200,000

Context and question: The Boston television DMA, which also includes Manchester, New Hampshire, is the 8th largest in the United States. The city is served by stations representing every major American network, including WBZ-TV and its sister station WSBK-TV (the former a CBS O&O, the latter an MyNetwork TV affiliate), WCVB-TV (ABC), WHDH (NBC), WFXT (Fox), and WLVI (The CW). The city is also home to PBS station WGBH-TV, a major producer of PBS programs, which also operates WGBX. Spanish-language television networks, including MundoFox (WFXZ-CD), Univision (WUNI), Telemundo (WNEU), and Telefutura (WUTF-DT), have a presence in the region, with WNEU and WUTF serving as network owned-and-operated stations. Most of the area's television stations have their transmitters in nearby Needham and Newton along the Route 128 corridor. Six Boston television stations are carried by Canadian satellite television provider Bell TV and by cable television providers in Canada.
What ranking does the Boston television DMA hold?
Answer: 8th largest in the United States

Question: There have been modern studies that have supported the original autopsy finding. In a 2008 study, researchers analysed samples of Napoleon's hair from throughout his life, as well as samples from his family and other contemporaries. All samples had high levels of arsenic, approximately 100 times higher than the current average. According to these researchers, Napoleon's body was already heavily contaminated with arsenic as a boy, and the high arsenic concentration in his hair was not caused by intentional poisoning; people were constantly exposed to arsenic from glues and dyes throughout their lives.[note 7] Studies published in 2007 and 2008 dismissed evidence of arsenic poisoning, and confirmed evidence of peptic ulcer and gastric cancer as the cause of death.
Is there an answer to this question: A 2008 study supporting the original autopsy findings related to Napoleon's death analyzed samples of what substance taken from Napoleon and his family?

Answer: hair

Problem: Tuberculosis:

People with prolonged, frequent, or close contact with people with TB are at particularly high risk of becoming infected, with an estimated 22% infection rate. A person with active but untreated tuberculosis may infect 1015 (or more) other people per year. Transmission should occur from only people with active TB those with latent infection are not thought to be contagious. The probability of transmission from one person to another depends upon several factors, including the number of infectious droplets expelled by the carrier, the effectiveness of ventilation, the duration of exposure, the virulence of the M. tuberculosis strain, the level of immunity in the uninfected person, and others. The cascade of person-to-person spread can be circumvented by segregating those with active ("overt") TB and putting them on anti-TB drug regimens. After about two weeks of effective treatment, subjects with nonresistant active infections generally do not remain contagious to others. If someone does become infected, it typically takes three to four weeks before the newly infected person becomes infectious enough to transmit the disease to others.

About how long will a TB patient receiving effective treatment stay contagious?
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A:
two weeks