Problem: Valencia:

The city went through serious troubles in the mid-fourteenth century. On the one hand were the decimation of the population by the Black Death of 1348 and subsequent years of epidemics and on the other, the series of wars and riots that followed. Among these were the War of the Union, a citizen revolt against the excesses of the monarchy, led by Valencia as the capital of the kingdom and the war with Castile, which forced the hurried raising of a new wall to resist Castilian attacks in 1363 and 1364. In these years the coexistence of the three communities that occupied the cityChristian, Jewish and Muslim was quite contentious. The Jews who occupied the area around the waterfront had progressed economically and socially, and their quarter gradually expanded its boundaries at the expense of neighbouring parishes. Meanwhile, Muslims who remained in the city after the conquest were entrenched in a Moorish neighbourhood next to the present-day market Mosen Sorel. In 1391 an uncontrolled mob attacked the Jewish quarter, causing its virtual disappearance and leading to the forced conversion of its surviving members to Christianity. The Muslim quarter was attacked during a similar tumult among the populace in 1456, but the consequences were minor.

When was the Muslim section attacked?
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A: 1456

Problem: Two aspects of indigenous pre-Hispanic culture that withstood time are chenchule' and inafa'maolek. Chenchule' is the intricate system of reciprocity at the heart of Chamorro society. It is rooted in the core value of inafa'maolek. Historian Lawrence Cunningham in 1992 wrote, "In a Chamorro sense, the land and its produce belong to everyone. Inafa'maolek, or interdependence, is the key, or central value, in Chamorro culture ... Inafa'maolek depends on a spirit of cooperation and sharing. This is the armature, or core, that everything in Chamorro culture revolves around. It is a powerful concern for mutuality rather than individualism and private property rights."
What is the name of the intricate system in Guam?
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Answer: . Chenchule

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In July 2015, Eton accidentally sent emails to 400 prospective students, offering them conditional entrance to the school in September 2017. The email was intended for nine students, but an IT glitch caused the email to be sent to 400 additional families, who didn't necessarily have a place. In response, the school issued the following statement: "This error was discovered within minutes and each family was immediately contacted to notify them that it should be disregarded and to apologise. We take this type of incident very seriously indeed and so a thorough investigation, overseen by the headmaster Tony Little and led by the tutor for admissions, is being carried out to find out exactly what went wrong and ensure it cannot happen again. Eton College offers its sincere apologies to those boys concerned and their families. We deeply regret the confusion and upset this must have caused."
In what year did Tony Little become the Headmaster of Eton?
A: unanswerable

Context and question: To compete with the popular Family Computer in Japan, NEC Home Electronics launched the PC Engine in 1987, and Sega Enterprises followed suit with the Mega Drive in 1988. The two platforms were later launched in North America in 1989 as the TurboGrafx-16 and the Genesis respectively. Both systems were built on 16-bit architectures and offered improved graphics and sound over the 8-bit NES. However, it took several years for Sega's system to become successful. Nintendo executives were in no rush to design a new system, but they reconsidered when they began to see their dominance in the market slipping.
How was the 8-bit NES an improvement?
Answer: unanswerable

Question: Skiing, snowboarding and mountaineering are among the most popular sports in Switzerland, the nature of the country being particularly suited for such activities. Winter sports are practiced by the natives and tourists since the second half of the 19th century with the invention of bobsleigh in St. Moritz. The first world ski championships were held in Murren (1931) and St. Moritz (1934). The latter town hosted the second Winter Olympic Games in 1928 and the fifth edition in 1948. Among the most successful skiers and world champions are Pirmin Zurbriggen and Didier Cuche.
Is there an answer to this question: When were the first ski championships held in Murren?

Answer: 1931

Problem: American Idol:

On May 30, 2006, Taylor Hicks was named American Idol, with Katharine McPhee the runner-up. "Do I Make You Proud" was released as Hicks' first single and McPhee's was "My Destiny".

Who was the winner American Idol in 2006?
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A:
Taylor Hicks