Problem: Bern:

No archaeological evidence that indicates a settlement on the site of todays city centre prior to the 12th century has been found so far. In antiquity, a Celtic oppidum stood on the Engehalbinsel (peninsula) north of Bern, fortified since the 2nd century BC (late La Tene period), thought to be one of the twelve oppida of the Helvetii mentioned by Caesar. During the Roman era, there was a Gallo-Roman vicus on the same site. The Bern zinc tablet has the name Brenodor ("dwelling of Breno"). In the Early Middle Ages, there was a settlement in Bumpliz, now a city district of Bern, some 4 km (2 mi) from the medieval city.

What era was there a Gallo-Roman vicus on the same site?
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A: Roman era

Problem: The Swazi economy is very closely linked to the economy of South Africa, from which it receives over 90% of its imports and to which it sends about 70% of its exports. Swaziland's other key trading partners are the United States and the EU, from whom the country has received trade preferences for apparel exports (under the African Growth and Opportunity Act AGOA to the US) and for sugar (to the EU). Under these agreements, both apparel and sugar exports did well, with rapid growth and a strong inflow of foreign direct investment. Textile exports grew by over 200% between 2000 and 2005 and sugar exports increasing by more than 50% over the same period.
Between 2000 and 2005 what percentage did Swazi sugar exports increase by?
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Answer: more than 50%

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Modern examples particularly include Chinese characters for SI units. In Chinese these units are disyllabic and standardly written with two characters, as limi "centimeter" ( centi-, meter) or qianwa "kilowatt". However, in the 19th century these were often written via compound characters, pronounced disyllabically, such as for or for some of these characters were also used in Japan, where they were pronounced with borrowed European readings instead. These have now fallen out of general use, but are occasionally seen. Less systematic examples include tushuguan "library", a contraction of , A four-morpheme word, shehui zhuyi "socialism", is commonly written with a single character formed by combining the last character, , with the radical of the first, , yielding roughly .
What are disyllabic and usually written with two characters?
A: SI units

Context and question: In January 2009, the European Commission announced it would investigate the bundling of Internet Explorer with Windows operating systems from Microsoft, saying "Microsoft's tying of Internet Explorer to the Windows operating system harms competition between web browsers, undermines product innovation and ultimately reduces consumer choice." Microsoft Corp v Commission
Who investigated the bundling of the IE browser with Windows OS?
Answer: the European Commission

Question: The Roman Catholic Diocese of Charleston Office of Education also operates out of the city and oversees several K-8 parochial schools, such as Blessed Sacrament School, Christ Our King School, Charleston Catholic School, Nativity School, and Divine Redeemer School, all of which are "feeder" schools into Bishop England High School, a diocesan high school within the city. Bishop England, Porter-Gaud School, and Ashley Hall are the city's oldest and most prominent private schools, and are a significant part of Charleston history, dating back some 150 years.
Is there an answer to this question: Which organization oversees several K-9 Parochial Schools?

Answer: unanswerable

Problem: Alfred North Whitehead:

The ultimate substantive legacy of Principia Mathematica is mixed. It is generally accepted that Kurt Godel's incompleteness theorem of 1931 definitively demonstrated that for any set of axioms and inference rules proposed to encapsulate mathematics, there would in fact be some truths of mathematics which could not be deduced from them, and hence that Principia Mathematica could never achieve its aims. However, Godel could not have come to this conclusion without Whitehead and Russell's book. In this way, Principia Mathematica's legacy might be described as its key role in disproving the possibility of achieving its own stated goals. But beyond this somewhat ironic legacy, the book popularized modern mathematical logic and drew important connections between logic, epistemology, and metaphysics.

Who discovered the incompleteness theorem of 1961?
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A:
unanswerable