Problem: Religion in ancient Rome:

Human sacrifice in ancient Rome was rare but documented. After the Roman defeat at Cannae two Gauls and two Greeks were buried under the Forum Boarium, in a stone chamber "which had on a previous occasion [228 BC] also been polluted by human victims, a practice most repulsive to Roman feelings". Livy avoids the word "sacrifice" in connection with this bloodless human life-offering; Plutarch does not. The rite was apparently repeated in 113 BC, preparatory to an invasion of Gaul. Its religious dimensions and purpose remain uncertain.

How were sacrifices of humans carried out in Rome?
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A: buried


Problem: Southampton was named "fittest city in the UK" in 2006 by Men's Fitness magazine. The results were based on the incidence of heart disease, the amount of junk food and alcohol consumed, and the level of gym membership. In 2007, it had slipped one place behind London, but was still ranked first when it came to the parks and green spaces available for exercise and the amount of television watched by Sotonians was the lowest in the country. Speedway racing took place at Banister Court Stadium in the pre-war era. It returned in the 1940s after WW2 and the Saints operated until the stadium closed down at the end of 1963. A training track operated in the 1950s in the Hamble area.
During the pre-war period, where was speedway racing held?
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Answer: Banister Court Stadium


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 2013, China led the world in renewable energy production, with a total capacity of 378 GW, mainly from hydroelectric and wind power. As of 2014, China leads the world in the production and use of wind power, solar photovoltaic power and smart grid technologies, generating almost as much water, wind and solar energy as all of France and Germany's power plants combined. China's renewable energy sector is growing faster than its fossil fuels and nuclear power capacity. Since 2005, production of solar cells in China has expanded 100-fold. As Chinese renewable manufacturing has grown, the costs of renewable energy technologies have dropped. Innovation has helped, but the main driver of reduced costs has been market expansion.
Who led the world in renewable energy production in 2013?
A: China


Context and question: Until March 1, 2009, the Borough President of the Bronx was Adolfo Carrión Jr., elected as a Democrat in 2001 and 2005 before retiring early to direct the White House Office of Urban Affairs Policy. His successor, Democratic New York State Assembly member Rubén Díaz, Jr., who won a special election on April 21, 2009 by a vote of 86.3% (29,420) on the "Bronx Unity" line to 13.3% (4,646) for the Republican district leader Anthony Ribustello on the "People First" line, became Borough President on May 1.
Who succeeded Carrion Jr.?
Answer: Rubén Díaz, Jr.


Question: Some video compression schemes typically operate on square-shaped groups of neighboring pixels, often called macroblocks. These pixel groups or blocks of pixels are compared from one frame to the next, and the video compression codec sends only the differences within those blocks. In areas of video with more motion, the compression must encode more data to keep up with the larger number of pixels that are changing. Commonly during explosions, flames, flocks of animals, and in some panning shots, the high-frequency detail leads to quality decreases or to increases in the variable bitrate.
Is there an answer to this question: What do high-frequency explosions lead to?

Answer: unanswerable


Problem: The Blitz:

Within hours of the UK and France declaring war on Germany on 3 September 1939, the RAF bombed German warships along the German coast at Wilhelmshaven. Thereafter bombing operations were against ports and shipping and propaganda leaflet drops. Operations were planned to minimize civilian casualties. From 15 May 1940 – the day after the Luftwaffe destroyed the centre of Rotterdam – the RAF also carried out operations east of the Rhine, attacking industrial and transportation targets. Operations were carried out every night thereafter.

Which two countries declared war on Germany on September 3 1939?
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A:
UK and France