Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Though almost any variety of acoustic mandolin might be adequate for Irish traditional music, virtually all Irish players prefer flat-backed instruments with oval sound holes to the Italian-style bowl-back mandolins or the carved-top mandolins with f-holes favoured by bluegrass mandolinists. The former are often too soft-toned to hold their own in a session (as well as having a tendency to not stay in place on the player's lap), whilst the latter tend to sound harsh and overbearing to the traditional ear. The f-hole mandolin, however, does come into its own in a traditional session, where its brighter tone cuts through the sonic clutter of a pub. Greatly preferred for formal performance and recording are flat-topped "Irish-style" mandolins (reminiscent of the WWI-era Martin Army-Navy mandolin) and carved (arch) top mandolins with oval soundholes, such as the Gibson A-style of the 1920s.
Which mandolin wasn't preferred for formal performances and recordings?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Typically, the warmest day of the year (19712000) will achieve a temperature of 26.6 C (80 F), although in June 1976 the temperature reached 31.6 C (89 F), the site record. On average, 4.25 days of the year will report a maximum temperature of 25.1 C (77 F) or above. During the winter half of the year, the coldest night will typically fall to 4.1 C (25 F) although in January 1979 the temperature fell to 8.8 C (16 F). Typically, 18.6 nights of the year will register an air frost.
In what month and year did Plymouth see its highest temperature between 1971 and 2000?
A: June 1976

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Today, about 37% of all Christians live in the Americas, and about 26% live in Europe, 24% of total Christians live in sub-Saharan Africa, about 13% in Asia and the Pacific, and 1% of the world's Christians live in the Middle east and North Africa. About half of all Christians worldwide are Catholic, while more than a third are Protestant (37%). Orthodox communions comprise 12% of the world's Christians. Other Christian groups make up the remainder. Christians make up the majority of the population in 158 countries and territories. 280 million Christian live as a minority.
How many million Christians live as a majority?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Russian SFSR was controlled by the Communist Party of the Soviet Union, until the abortive 1991 August coup, which prompted President Yeltsin to suspend the recently created Communist Party of the Russian Soviet Federative Socialist Republic.
What event prompted the end to the control of the Communist Party of the Soviet Union in the RSFSR?
A:
the abortive 1991 August coup