Problem: Charleston, South Carolina:

Investment in the city continued. The William Enston Home, a planned community for the city's aged and infirm, was built in 1889. An elaborate public building, the United States Post Office and Courthouse, was completed by the federal government in 1896 in the heart of the city. The Democrat-dominated state legislature passed a new constitution in 1895 that disfranchised blacks, effectively excluding them entirely from the political process, a second-class status that was maintained for more than six decades in a state that was majority black until about 1930.

What year was a new constitution passed that discriminated against whites were passed?
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A: unanswerable

Problem: The Roman Republic (Latin: Res publica Romana; Classical Latin: [res pub.l.ka roma.na]) was the period of ancient Roman civilization beginning with the overthrow of the Roman Kingdom, traditionally dated to 509 BC, and ending in 27 BC with the establishment of the Roman Empire. It was during this period that Rome's control expanded from the city's immediate surroundings to hegemony over the entire Mediterranean world. During the first two centuries of its existence, the Roman Republic expanded through a combination of conquest and alliance, from central Italy to the entire Italian peninsula. By the following century, it included North Africa, Spain, and what is now southern France. Two centuries after that, towards the end of the 1st century BC, it included the rest of modern France, Greece, and much of the eastern Mediterranean. By this time, internal tensions led to a series of civil wars, culminating with the assassination of Julius Caesar, which led to the transition from republic to empire. The exact date of transition can be a matter of interpretation. Historians have variously proposed Julius Caesar's crossing of the Rubicon River in 49 BC, Caesar's appointment as dictator for life in 44 BC, and the defeat of Mark Antony and Cleopatra at the Battle of Actium in 31 BC. However, most use the same date as did the ancient Romans themselves, the Roman Senate's grant of extraordinary powers to Octavian and his adopting the title Augustus in 27 BC, as the defining event ending the Republic.
When did the Roman Republic end?
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Answer: 27 BC

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Examples of energy transformation include generating electric energy from heat energy via a steam turbine, or lifting an object against gravity using electrical energy driving a crane motor. Lifting against gravity performs mechanical work on the object and stores gravitational potential energy in the object. If the object falls to the ground, gravity does mechanical work on the object which transforms the potential energy in the gravitational field to the kinetic energy released as heat on impact with the ground. Our Sun transforms nuclear potential energy to other forms of energy; its total mass does not decrease due to that in itself (since it still contains the same total energy even if in different forms), but its mass does decrease when the energy escapes out to its surroundings, largely as radiant energy.
what type of energy escapes to its surroundings when mass increases?
A: unanswerable

Context and question: The American Civil War was the costliest war for the U.S. in terms of casualties. After most slave states, located in the southern U.S., formed the Confederate States, C.S. troops led by former U.S. Army officers, mobilized a very large fraction of Southern white manpower. Forces of the United States (the "Union" or "the North") formed the Union Army consisting of a small body of regular army units and a large body of volunteer units raised from every state, north and south, except South Carolina.[citation needed]
Which war had the most U.S. casualties associated with it?
Answer: The American Civil War

Question: British television personality Anna Richardson settled a libel lawsuit in August 2006 against Schwarzenegger, his top aide, Sean Walsh, and his publicist, Sheryl Main. A joint statement read: "The parties are content to put this matter behind them and are pleased that this legal dispute has now been settled." Richardson claimed they tried to tarnish her reputation by dismissing her allegations that Schwarzenegger touched her breast during a press event for The 6th Day in London. She claimed Walsh and Main libeled her in a Los Angeles Times article when they contended she encouraged his behavior.
Is there an answer to this question: What movie was Schwarzenegger promoting when the alleged incident took place?

Answer: The 6th Day

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Rapid environmental changes typically cause mass extinctions. More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described. The total amount of related DNA base pairs on Earth is estimated at 5.0 x 1037, and weighs 50 billion tonnes. In comparison, the total mass of the biosphere has been estimated to be as much as 4 TtC (trillion tons of carbon).
How many DNA base pairs have ever existed?
A:
unanswerable