Problem: Race (human categorization):

The European concept of "race", along with many of the ideas now associated with the term, arose at the time of the scientific revolution, which introduced and privileged the study of natural kinds, and the age of European imperialism and colonization which established political relations between Europeans and peoples with distinct cultural and political traditions. As Europeans encountered people from different parts of the world, they speculated about the physical, social, and cultural differences among various human groups. The rise of the Atlantic slave trade, which gradually displaced an earlier trade in slaves from throughout the world, created a further incentive to categorize human groups in order to justify the subordination of African slaves. Drawing on Classical sources and upon their own internal interactions for example, the hostility between the English and Irish powerfully influenced early European thinking about the differences between people Europeans began to sort themselves and others into groups based on physical appearance, and to attribute to individuals belonging to these groups behaviors and capacities which were claimed to be deeply ingrained. A set of folk beliefs took hold that linked inherited physical differences between groups to inherited intellectual, behavioral, and moral qualities. Similar ideas can be found in other cultures, for example in China, where a concept often translated as "race" was associated with supposed common descent from the Yellow Emperor, and used to stress the unity of ethnic groups in China. Brutal conflicts between ethnic groups have existed throughout history and across the world.

When did many of the ideas associated with the term "race" arise?
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A: time of the scientific revolution

Problem: For example, the full name of Oda Nobunaga would be "Oda Kazusanosuke Saburo Nobunaga" (), in which "Oda" is a clan or family name, "Kazusanosuke" is a title of vice-governor of Kazusa province, "Saburo" is a formal nickname (yobina), and "Nobunaga" is an adult name (nanori) given at genpuku, the coming of age ceremony. A man was addressed by his family name and his title, or by his yobina if he did not have a title. However, the nanori was a private name that could be used by only a very few, including the Emperor.
What did Oda mean?
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Answer: a clan or family name

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On December 25, 1991, following the collapse of the Soviet Union, the republic was renamed the Russian Federation, which it remains to this day. This name and "Russia" were specified as the official state names in the April 21, 1992 amendment to the existing constitution and were retained as such in the 1993 Constitution of Russia.
When did the Soviet Union break up?
A: December 25, 1991

Context and question: Solar radiation is absorbed by the Earth's land surface, oceans which cover about 71% of the globe and atmosphere. Warm air containing evaporated water from the oceans rises, causing atmospheric circulation or convection. When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earth's surface, completing the water cycle. The latent heat of water condensation amplifies convection, producing atmospheric phenomena such as wind, cyclones and anti-cyclones. Sunlight absorbed by the oceans and land masses keeps the surface at an average temperature of 14 C. By photosynthesis green plants convert solar energy into chemically stored energy, which produces food, wood and the biomass from which fossil fuels are derived.
What creates wind, cyclones and anti-cyclones?
Answer: The latent heat of water condensation amplifies convection

Question: The Raleigh Parks and Recreation Department offers a wide variety of leisure opportunities at more than 150 sites throughout the city, which include: 8,100 acres (33 km2) of park land, 78 miles (126 km) of greenway, 22 community centers, a BMX championship-caliber race track, 112 tennis courts among 25 locations, 5 public lakes, and 8 public aquatic facilities. The J. C. Raulston Arboretum, an 8-acre (32,000 m) arboretum and botanical garden in west Raleigh administered by North Carolina State University, maintains a year-round collection that is open daily to the public without charge.
Is there an answer to this question: How many football stadiums are there?

Answer: unanswerable

Question: Federalism has a long tradition in German history. The Holy Roman Empire comprised many petty states numbering more than 300 around 1796. The number of territories was greatly reduced during the Napoleonic Wars (17961814). After the Congress of Vienna (1815), 39 states formed the German Confederation. The Confederation was dissolved after the Austro-Prussian War and replaced by a North German Federation under Prussian hegemony; this war left Prussia dominant in Germany, and German nationalism would compel the remaining independent states to ally with Prussia in the Franco-Prussian War of 187071, and then to accede to the crowning of King Wilhelm of Prussia as German Emperor. The new German Empire included 25 states (three of them, Hanseatic cities) and the imperial territory of Alsace-Lorraine. The empire was dominated by Prussia, which controlled 65% of the territory and 62% of the population. After the territorial losses of the Treaty of Versailles, the remaining states continued as republics of a new German federation. These states were gradually de facto abolished and reduced to provinces under the Nazi regime via the Gleichschaltung process, as the states administratively were largely superseded by the Nazi Gau system.
Is there an answer to this question: What was the Holy Roman Empire replaced with?

Answer:
unanswerable