Problem: Imperial College London:

Imperial College Union, the students' union at Imperial College, is run by five full-time sabbatical officers elected from the student body for a tenure of one year, and a number of permanent members of staff. The Union is given a large subvention by the university, much of which is spent on maintaining around 300 clubs, projects and societies. Examples of notable student groups and projects are Project Nepal which sends Imperial College students to work on educational development programmes in rural Nepal and the El Salvador Project, a construction based project in Central America. The Union also hosts sports-related clubs such as Imperial College Boat Club and Imperial College Gliding Club.

What is run by 5 full-time students?
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A: unanswerable

Problem: At the beginning of the Western Han dynasty, thirteen centrally controlled commanderiesincluding the capital regionexisted in the western third of the empire, while the eastern two-thirds were divided into ten semi-autonomous kingdoms. To placate his prominent commanders from the war with Chu, Emperor Gaozu enfeoffed some of them as kings. By 157 BC, the Han court had replaced all of these kings with royal Liu family members, since the loyalty of non-relatives to the throne was questioned. After several insurrections by Han kingsthe largest being the Rebellion of the Seven States in 154 BCthe imperial court enacted a series of reforms beginning in 145 BC limiting the size and power of these kingdoms and dividing their former territories into new centrally controlled commanderies. Kings were no longer able to appoint their own staff; this duty was assumed by the imperial court. Kings became nominal heads of their fiefs and collected a portion of tax revenues as their personal incomes. The kingdoms were never entirely abolished and existed throughout the remainder of Western and Eastern Han.
How many commanderies were in the western third of the empire?
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Answer: thirteen

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Another major addition to the city's museum scene is the Museum of Remembrance and Tolerance (Museo de la Memoria y Tolerancia), inaugurated in early 2011. The brainchild of two young Mexican women as a Holocaust museum, the idea morphed into a unique museum dedicated to showcasing all major historical events of discrimination and genocide. Permanent exhibits include those on the Holocaust and other large-scale atrocities. It also houses temporary exhibits; one on Tibet was inaugurated by the Dalai Lama in September 2011.
The exhibit inaugurated by the Dalai Lama opened when?
A: September 2011

Context and question: Many ground crew at the airport work at the aircraft. A tow tractor pulls the aircraft to one of the airbridges, The ground power unit is plugged in. It keeps the electricity running in the plane when it stands at the terminal. The engines are not working, therefore they do not generate the electricity, as they do in flight. The passengers disembark using the airbridge. Mobile stairs can give the ground crew more access to the aircraft's cabin. There is a cleaning service to clean the aircraft after the aircraft lands. Flight catering provides the food and drinks on flights. A toilet waste truck removes the human waste from the tank which holds the waste from the toilets in the aircraft. A water truck fills the water tanks of the aircraft. A fuel transfer vehicle transfers aviation fuel from fuel tanks underground, to the aircraft tanks. A tractor and its dollies bring in luggage from the terminal to the aircraft. They also carry luggage to the terminal if the aircraft has landed, and is being unloaded. Hi-loaders lift the heavy luggage containers to the gate of the cargo hold. The ground crew push the luggage containers into the hold. If it has landed, they rise, the ground crew push the luggage container on the hi-loader, which carries it down. The luggage container is then pushed on one of the tractors dollies. The conveyor, which is a conveyor belt on a truck, brings in the awkwardly shaped, or late luggage. The airbridge is used again by the new passengers to embark the aircraft. The tow tractor pushes the aircraft away from the terminal to a taxi area. The aircraft should be off of the airport and in the air in 90 minutes. The airport charges the airline for the time the aircraft spends at the airport.
What pulls an airbridge to the aircraft?
Answer: unanswerable

Question: Like many major American cities, Boston has seen a great reduction in violent crime since the early 1990s. Boston's low crime rate since the 1990s has been credited to the Boston Police Department's collaboration with neighborhood groups and church parishes to prevent youths from joining gangs, as well as involvement from the United States Attorney and District Attorney's offices. This helped lead in part to what has been touted as the "Boston Miracle". Murders in the city dropped from 152 in 1990 (for a murder rate of 26.5 per 100,000 people) to just 31not one of them a juvenilein 1999 (for a murder rate of 5.26 per 100,000).
Is there an answer to this question: Since the early 1990's, Boston has had less of what type of crime?

Answer: violent crime

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Slavery and slaves were part of the social order; there were slave markets where they could be bought and sold. Many slaves were freed by the masters for services rendered; some slaves could save money to buy their freedom. Generally, mutilation and murder of slaves was prohibited by legislation. However, Rome did not have a law enforcement arm. All actions were treated as "torts," which were brought by an accuser who was forced to prove the entire case himself. If the accused were a noble and the victim, not a noble, the likelihood of finding for the accused was small. At most, the accused might have to pay a fine for killing a slave. It is estimated that over 25% of the Roman population was enslaved.
Where in the Roman Republic could slaves be acquired?
A:
slave markets