Problem: Sumer:

The Sumerians were a non-Semitic caucasoid people, and spoke a language isolate; a number of linguists believed they could detect a substrate language beneath Sumerian, because names of some of Sumer's major cities are not Sumerian, revealing influences of earlier inhabitants. However, the archaeological record shows clear uninterrupted cultural continuity from the time of the early Ubaid period (5300 4700 BC C-14) settlements in southern Mesopotamia. The Sumerian people who settled here farmed the lands in this region that were made fertile by silt deposited by the Tigris and the Euphrates rivers.

Where did people fish in the Ubaid period?
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A: unanswerable

Problem: Feathers require maintenance and birds preen or groom them daily, spending an average of around 9% of their daily time on this. The bill is used to brush away foreign particles and to apply waxy secretions from the uropygial gland; these secretions protect the feathers' flexibility and act as an antimicrobial agent, inhibiting the growth of feather-degrading bacteria. This may be supplemented with the secretions of formic acid from ants, which birds receive through a behaviour known as anting, to remove feather parasites.
What percentage of their day do birds groom their feathers?
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Answer: 9%

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 2008, Forbes magazine named Oklahoma City the most "recession proof city in America". The magazine reported that the city had falling unemployment, one of the strongest housing markets in the country and solid growth in energy, agriculture and manufacturing. However, during the early 1980s, Oklahoma City had one of the worst job and housing markets due to the bankruptcy of Penn Square Bank in 1982 and then the post-1985 crash in oil prices.[citation needed]
What year did forbes list Oklahoma city as "recession proof".
A: 2008

Context and question: Between 1945 and 1989, the share of ethnic Estonians in the population resident within the currently defined boundaries of Estonia dropped to 61%, caused primarily by the Soviet programme promoting mass immigration of urban industrial workers from Russia, Ukraine, and Belarus, as well as by wartime emigration and Joseph Stalin's mass deportations and executions.[citation needed] By 1989, minorities constituted more than one-third of the population, as the number of non-Estonians had grown almost fivefold.
What period did the amount of ethnic Estonians drop by 61%?
Answer: Between 1945 and 1989

Question: The native language of Germans is German, a West Germanic language, related to and classified alongside English and Dutch, and sharing many similarities with the North Germanic and Scandinavian languages. Spoken by approximately 100 million native speakers, German is one of the world's major languages and the most widely spoken first language in the European Union. German has been replaced by English as the dominant language of science-related Nobel Prize laureates during the second half of the 20th century. It was a lingua franca in the Holy Roman Empire.
Is there an answer to this question: What languages is German related to?

Answer: English and Dutch

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Hannover 96 (nickname Die Roten or 'The Reds') is the top local football team that plays in the Bundesliga top division. Home games are played at the HDI-Arena, which hosted matches in the 1974 and 2006 World Cups and the Euro 1988. Their reserve team Hannover 96 II plays in the fourth league. Their home games were played in the traditional Eilenriedestadium till they moved to the HDI Arena due to DFL directives. Arminia Hannover is another very traditional soccer team in Hanover that has played in the first league for years and plays now in the Niedersachsen-West Liga (Lower Saxony League West). Home matches are played in the Rudolf-Kalweit-Stadium.
Where does the national football team play?
A:
unanswerable