Problem: Carnival:

Carnival is known as Crop Over and is Barbados's biggest festival. Its early beginnings were on the sugar cane plantations during the colonial period. Crop over began in 1688, and featured singing, dancing and accompaniment by shak-shak, banjo, triangle, fiddle, guitar, bottles filled with water and bones. Other traditions included climbing a greased pole, feasting and drinking competitions. Originally signaling the end of the yearly cane harvest, it evolved into a national festival. In the late 20th century, Crop Over began to closely mirror the Trinidad Carnival. Beginning in June, Crop Over runs until the first Monday in August when it culminates in the finale, The Grand Kadooment.

What is the Carnival known as in Barbados?
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A: Crop Over

Problem: Military history of the United States:

The Vietnam War was a war fought between 1959 and 1975 on the ground in South Vietnam and bordering areas of Cambodia and Laos (see Secret War) and in the strategic bombing (see Operation Rolling Thunder) of North Vietnam. American advisors came in the late 1950s to help the RVN (Republic of Vietnam) combat Communist insurgents known as "Viet Cong." Major American military involvement began in 1964, after Congress provided President Lyndon B. Johnson with blanket approval for presidential use of force in the Gulf of Tonkin Resolution.

Besides China, what other countries saw fighting in this war?
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A: unanswerable

Problem: European Central Bank:

The bank must also co-operate within the EU and internationally with third bodies and entities. Finally, it contributes to maintaining a stable financial system and monitoring the banking sector. The latter can be seen, for example, in the bank's intervention during the subprime mortgage crisis when it loaned billions of euros to banks to stabilise the financial system. In December 2007, the ECB decided in conjunction with the Federal Reserve System under a programme called Term auction facility to improve dollar liquidity in the eurozone and to stabilise the money market.

When did the ECB and Federal Reserve decide to separate on Term auction facility?
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A: unanswerable

Problem: Estonian language:

Modern Estonian orthography is based on the Newer Orthography created by Eduard Ahrens in the second half of the 19th century based on Finnish orthography. The Older Orthography it replaced was created in the 17th century by Bengt Gottfried Forselius and Johann Hornung based on standard German orthography. Earlier writing in Estonian had by and large used an ad hoc orthography based on Latin and Middle Low German orthography. Some influences of the standard German orthography for example, writing 'W'/'w' instead of 'V'/'v' persisted well into the 1930s.

From what other country's orthography did the Older Orthography get its basis?
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A:
standard German orthography