Problem: United States dollar:

Currently printed denominations are $1, $2, $5, $10, $20, $50, and $100. Notes above the $100 denomination stopped being printed in 1946 and were officially withdrawn from circulation in 1969. These notes were used primarily in inter-bank transactions or by organized crime; it was the latter usage that prompted President Richard Nixon to issue an executive order in 1969 halting their use. With the advent of electronic banking, they became less necessary. Notes in denominations of $500, $1,000, $5,000, $10,000 and $100,000 were all produced at one time; see large denomination bills in U.S. currency for details. These notes are now collectors' items and are worth more than their face value to collectors.

What use of lower value bills prompted Nixon to halt the use of said bills?
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A: unanswerable

Problem: In July 2009, Dell apologized after drawing the ire of the Taiwanese Consumer Protection Commission for twice refusing to honour a flood of orders against unusually low prices offered on its Taiwanese website. In the first instance, Dell offered a 19" LCD panel for $15. In the second instance, Dell offered its Latitude E4300 notebook at NT$18,558 (US$580), 70% lower than usual price of NT$60,900 (US$1900). Concerning the E4300, rather than honour the discount taking a significant loss, the firm withdrew orders and offered a voucher of up to NT$20,000 (US$625) a customer in compensation. The consumer rights authorities in Taiwan fined Dell NT$1 million (US$31250) for customer rights infringements. Many consumers sued the firm for the unfair compensation. A court in southern Taiwan ordered the firm to deliver 18 laptops and 76 flat-panel monitors to 31 consumers for NT$490,000 (US$15,120), less than a third of the normal price. The court said the event could hardly be regarded as mistakes, as the prestigious firm said the company mispriced its products twice in Taiwanese website within 3 weeks.
What year didn't Dell come under fire from the Taiwanese Consumer Protection Commission?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 1995, Oklahoma City was the site of one of the most destructive acts of domestic terrorism in American history. The Oklahoma City bombing of April 19, 1995, in which Timothy McVeigh and Terry Nichols detonated an explosive outside of the Alfred P. Murrah Federal Building, killed 168 people, including 19 children. The two men were convicted of the bombing: McVeigh was sentenced to death and executed by the federal government on June 11, 2001; his partner Nichols is serving a sentence of life in prison without the possibility of parole. McVeigh's army buddy, Michael Fortier, was sentenced to 12 years in federal prison and ordered to pay a $75,000 fine for his role in the bombing plot (i.e. assisting in the sale of guns to raise funds for the bombing, and examining the Murrah Federal building as a possible target before the terrorist attack). His wife, Lori Fortier, who has since died, was granted immunity from prosecution in return for her testimony in the case.
When was the Oklahoma City Bombing?
A: April 19, 1995

Context and question: In contrast, the Salon Cubists built their reputation primarily by exhibiting regularly at the Salon d'Automne and the Salon des Independants, both major non-academic Salons in Paris. They were inevitably more aware of public response and the need to communicate. Already in 1910 a group began to form which included Metzinger, Gleizes, Delaunay and Leger. They met regularly at Henri le Fauconnier's studio near the Boulevard de Montparnasse. These soirees often included writers such as Guillaume Apollinaire and Andre Salmon. Together with other young artists, the group wanted to emphasise a research into form, in opposition to the Neo-Impressionist emphasis on color.
Which four people usually met at Fauconnier's studio in 1910?
Answer: Metzinger, Gleizes, Delaunay and Leger

Question: Plymouth has a post-war shopping area in the city centre with substantial pedestrianisation. At the west end of the zone inside a grade II listed building is the Pannier Market that was completed in 1959 pannier meaning "basket" from French, so it translates as "basket market". In terms of retail floorspace, Plymouth is ranked in the top five in the South West, and 29th nationally. Plymouth was one of the first ten British cities to trial the new Business Improvement District initiative. The Tinside Pool is situated at the foot of the Hoe and became a grade II listed building in 1998 before being restored to its 1930s look for 3.4 million.
Is there an answer to this question: What is Plymouth's national rank in retail floorspace?

Answer: 29th

At the request of the pope, he created an information office for prisoners of war and refugees, which in the years of its existence from 1939 until 1947 received almost ten million (9891497) information requests and produced over eleven million (11.293.511) answers about missing persons. Montini was several times openly attacked by Benito Mussolini's government as a politician, and meddling in politics, but each time he found powerful defenses by the Vatican. In 1944, Luigi Maglione died, and Pius XII appointed Tardini and Montini together as heads of the State Department. Montini's admiration was almost filial, when he described Pope Pius XII:
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What Italian Prime Minister attacked Montini for his political stances?
Ah, so..
Mussolini