Problem: Elevator:

Some people argue that elevators began as simple rope or chain hoists (see Traction elevators below). An elevator is essentially a platform that is either pulled or pushed up by a mechanical means. A modern-day elevator consists of a cab (also called a "cage", "carriage" or "car") mounted on a platform within an enclosed space called a shaft or sometimes a "hoistway". In the past, elevator drive mechanisms were powered by steam and water hydraulic pistons or by hand. In a "traction" elevator, cars are pulled up by means of rolling steel ropes over a deeply grooved pulley, commonly called a sheave in the industry. The weight of the car is balanced by a counterweight. Sometimes two elevators are built so that their cars always move synchronously in opposite directions, and are each other's counterweight.

How do elevators built in pairs work?
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A: their cars always move synchronously in opposite directions,

Problem: The city's municipal government was dominated by about 1215 merchant families, whose wealth came from overseas trade with continental Europe in particular the export of wool and hides and the import of salt, iron and wine. The medieval population of Cork was about 2,100 people. It suffered a severe blow in 1349 when almost half the townspeople died of plague when the Black Death arrived in the town. In 1491, Cork played a part in the English Wars of the Roses when Perkin Warbeck a pretender to the English throne, landed in the city and tried to recruit support for a plot to overthrow Henry VII of England. The then mayor of Cork and several important citizens went with Warbeck to England but when the rebellion collapsed they were all captured and executed. The title of Mayor of Cork was established by royal charter in 1318, and the title was changed to Lord Mayor in 1900 following the knighthood of the incumbent Mayor by Queen Victoria on her Royal visit to the city.
What was the medieval population of England?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Fraser maintained some of the social reforms of the Whitlam era, while seeking increased fiscal restraint. His government included the first Aboriginal federal parliamentarian, Neville Bonner, and in 1976, Parliament passed the Aboriginal Land Rights Act 1976, which, while limited to the Northern Territory, affirmed "inalienable" freehold title to some traditional lands. Fraser established the multicultural broadcaster SBS, accepted Vietnamese refugees, opposed minority white rule in Apartheid South Africa and Rhodesia and opposed Soviet expansionism. A significant program of economic reform however was not pursued. By 1983, the Australian economy was suffering with the early 1980s recession and amidst the effects of a severe drought. Fraser had promoted "states' rights" and his government refused to use Commonwealth powers to stop the construction of the Franklin Dam in Tasmania in 1982. Liberal minister, Don Chipp split off from the party to form a new social liberal party, the Australian Democrats in 1977. Fraser won further substantial majorities at the 1977 and 1980 elections, before losing to the Bob Hawke led Australian Labor Party in the 1983 election.
Who did Frazer eventually lose to in 1976?
A: unanswerable

Context and question: A person can be exposed to uranium (or its radioactive daughters, such as radon) by inhaling dust in air or by ingesting contaminated water and food. The amount of uranium in air is usually very small; however, people who work in factories that process phosphate fertilizers, live near government facilities that made or tested nuclear weapons, live or work near a modern battlefield where depleted uranium weapons have been used, or live or work near a coal-fired power plant, facilities that mine or process uranium ore, or enrich uranium for reactor fuel, may have increased exposure to uranium. Houses or structures that are over uranium deposits (either natural or man-made slag deposits) may have an increased incidence of exposure to radon gas. The Occupational Safety and Health Administration (OSHA) has set the permissible exposure limit for uranium exposure in the workplace as 0.25 mg/m3 over an 8-hour workday. The National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL) of 0.2 mg/m3 over an 8-hour workday and a short-term limit of 0.6 mg/m3. At levels of 10 mg/m3, uranium is immediately dangerous to life and health.
What is the OSHA uranium exposure limit for an 9-hour workday?
Answer: unanswerable

Question: Beyonce further expanded her acting career, starring as blues singer Etta James in the 2008 musical biopic, Cadillac Records. Her performance in the film received praise from critics, and she garnered several nominations for her portrayal of James, including a Satellite Award nomination for Best Supporting Actress, and a NAACP Image Award nomination for Outstanding Supporting Actress. Beyonce donated her entire salary from the film to Phoenix House, an organization of rehabilitation centers for heroin addicts around the country. On January 20, 2009, Beyonce performed James' "At Last" at the First Couple's first inaugural ball. Beyonce starred opposite Ali Larter and Idris Elba in the thriller, Obsessed. She played Sharon Charles, a mother and wife who learns of a woman's obsessive behavior over her husband. Although the film received negative reviews from critics, the movie did well at the US box office, grossing $68 million$60 million more than Cadillac Recordson a budget of $20 million. The fight scene finale between Sharon and the character played by Ali Larter also won the 2010 MTV Movie Award for Best Fight.
Is there an answer to this question: How much more that the buget did the film gross?

Answer: 60 million

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Longwood Medical and Academic Area, adjacent to the Fenway district, is home to a large number of medical and research facilities, including Beth Israel Deaconess Medical Center, Brigham and Women's Hospital, Children's Hospital Boston, Dana-Farber Cancer Institute, Harvard Medical School, Joslin Diabetes Center, and the Massachusetts College of Pharmacy and Health Sciences. Prominent medical facilities, including Massachusetts General Hospital, Massachusetts Eye and Ear Infirmary and Spaulding Rehabilitation Hospital are located in the Beacon Hill area. St. Elizabeth's Medical Center is in Brighton Center of the city's Brighton neighborhood. New England Baptist Hospital is in Mission Hill. The city has Veterans Affairs medical centers in the Jamaica Plain and West Roxbury neighborhoods. The Boston Public Health Commission, an agency of the Massachusetts government, oversees health concerns for city residents. Boston EMS provides pre-hospital emergency medical services to residents and visitors.
What agency oversees health concerns for city residents?
A:
The Boston Public Health Commission