Problem: European Central Bank:

The European Central Bank had stepped up the buying of member nations debt. In response to the crisis of 2010, some proposals have surfaced for a collective European bond issue that would allow the central bank to purchase a European version of US Treasury bills. To make European sovereign debt assets more similar to a US Treasury, a collective guarantee of the member states' solvency would be necessary.[b] But the German government has resisted this proposal, and other analyses indicate that "the sickness of the euro" is due to the linkage between sovereign debt and failing national banking systems. If the European central bank were to deal directly with failing banking systems sovereign debt would not look as leveraged relative to national income in the financially weaker member states.

What is being caused by links between soverign debt and failing national banks?
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A: the sickness of the euro


Problem: Russian language:

As the Grand Duchy of Finland was part of the Russian Empire from 1809 to 1918, a number of Russian speakers have remained in Finland. There are 33,400 Russian-speaking Finns, amounting to 0.6% of the population. Five thousand (0.1%) of them are late 19th century and 20th century immigrants or their descendants, and the remaining majority are recent immigrants who moved there in the 1990s and later.[citation needed] Russian is spoken by 1.4% of the population of Finland according to a 2014 estimate from the World Factbook.

When did immigrants form the Russian Empire?
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A: unanswerable


Problem: Marvel Comics:

In April 2013, Marvel and other Disney conglomerate components began announcing joint projects. With ABC, a Once Upon a Time graphic novel was announced for publication in September. With Disney, Marvel announced in October 2013 that in January 2014 it would release its first title under their joint "Disney Kingdoms" imprint "Seekers of the Weird", a five-issue miniseries. On January 3, 2014, fellow Disney subsidiary Lucasfilm Limited, LLC announced that as of 2015, Star Wars comics would once again be published by Marvel.

When did Disney and Marvel announce they were ending joint projects?
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A: unanswerable


Problem: Pacific War:

The major Allied participants were the United States, the Republic of China, the United Kingdom (including the armed forces of British India, the Fiji Islands, Samoa, etc.), Australia, the Commonwealth of the Philippines, the Netherlands (as the possessor of the Dutch East Indies and the western part of New Guinea), New Zealand, and Canada, all of whom were members of the Pacific War Council. Mexico, Free France and many other countries also took part, especially forces from other British colonies.

What was the name of the Philippines nation?
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A:
Commonwealth of the Philippines