Problem: A cappella:

Present-day Christian religious bodies known for conducting their worship services without musical accompaniment include some Presbyterian churches devoted to the regulative principle of worship, Old Regular Baptists, Primitive Baptists, Plymouth Brethren, Churches of Christ, the Old German Baptist Brethren, Doukhobors the Byzantine Rite and the Amish, Old Order Mennonites and Conservative Mennonites. Certain high church services and other musical events in liturgical churches (such as the Roman Catholic Mass and the Lutheran Divine Service) may be a cappella, a practice remaining from apostolic times. Many Mennonites also conduct some or all of their services without instruments. Sacred Harp, a type of folk music, is an a cappella style of religious singing with shape notes, usually sung at singing conventions.

In present times, which group is know to use shape notes in religious services?
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A: unanswerable


Problem: The city is also the home of road bowling, which is played in the north-side and south-west suburbs. There are also boxing and martial arts clubs (including Brazilian jiu-jitsu, Karate, Muay Thai and Taekwondo) within the city. Cork Racing, a motorsport team based in Cork, has raced in the Irish Formula Ford Championship since 2005. Cork also hosts one of Ireland's most successful Australian Rules Football teams, the Leeside Lions, who have won the Australian Rules Football League of Ireland Premiership four times (in 2002, 2003, 2005 and 2007). There are also inline roller sports, such as hockey and figure skating, which transfer to the ice over the winter season.[citation needed]
In what years did the Muay Thai club win the Ireland Premiership?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In Hellenistic Egypt, the mathematician Euclid laid down the foundations of mathematical rigor and introduced the concepts of definition, axiom, theorem and proof still in use today in his Elements, considered the most influential textbook ever written. Archimedes, considered one of the greatest mathematicians of all time, is credited with using the method of exhaustion to calculate the area under the arc of a parabola with the summation of an infinite series, and gave a remarkably accurate approximation of Pi. He is also known in physics for laying the foundations of hydrostatics, statics, and the explanation of the principle of the lever.
Which mathematical figure did Archimedes approximate?
A: Pi


Context and question: Political interest groups have stated that these laws remove important restrictions on governmental authority, and are a dangerous encroachment on civil liberties, possible unconstitutional violations of the Fourth Amendment. On 30 July 2003, the American Civil Liberties Union (ACLU) filed the first legal challenge against Section 215 of the Patriot Act, claiming that it allows the FBI to violate a citizen's First Amendment rights, Fourth Amendment rights, and right to due process, by granting the government the right to search a person's business, bookstore, and library records in a terrorist investigation, without disclosing to the individual that records were being searched. Also, governing bodies in a number of communities have passed symbolic resolutions against the act.
When was Section 215 written?
Answer: unanswerable


Question: Ibn Sīnā refers to the secondary education stage of maktab schooling as a period of specialisation when pupils should begin to acquire manual skills, regardless of their social status. He writes that children after the age of 14 should be allowed to choose and specialise in subjects they have an interest in, whether it was reading, manual skills, literature, preaching, medicine, geometry, trade and commerce, craftsmanship, or any other subject or profession they would be interested in pursuing for a future career. He wrote that this was a transitional stage and that there needs to be flexibility regarding the age in which pupils graduate, as the student's emotional development and chosen subjects need to be taken into account.
Is there an answer to this question: What should secondary training provide a teacher in the secondary stage of school?

Answer: unanswerable


QUES: The city's population increased more than sixfold during the first half of the 20th century, fed largely by an influx of European, Middle Eastern (Lebanese, Assyrian/Chaldean), and Southern migrants to work in the burgeoning automobile industry. In 1940, Whites were 90.4% of the city's population. Since 1950 the city has seen a major shift in its population to the suburbs. In 1910, fewer than 6,000 blacks called the city home; in 1930 more than 120,000 blacks lived in Detroit. The thousands of African Americans who came to Detroit were part of the Great Migration of the 20th century.

What was the movement of blacks to northern cities called?
What is the answer?
ANS:
Great Migration