Problem: Greece:

In the 20th century, Greek composers have had a significant impact on the development of avant garde and modern classical music, with figures such as Iannis Xenakis, Nikos Skalkottas, and Dimitri Mitropoulos achieving international prominence. At the same time, composers and musicians such as Mikis Theodorakis, Manos Hatzidakis, Eleni Karaindrou, Vangelis and Demis Roussos garnered an international following for their music, which include famous film scores such as Zorba the Greek, Serpico, Never on Sunday, America America, Eternity and a Day, Chariots of Fire, Blade Runner, among others. Greek American composers known for their film scores include Yanni and Basil Poledouris. Notable Greek opera singers and classical musicians of the 20th and 21st century include Maria Callas, Nana Mouskouri, Mario Frangoulis, Leonidas Kavakos, Dimitris Sgouros and others.

Who is one of the notable Greek opera singers in the 20th century?
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A: Maria Callas


Problem: The end of World War II set the stage for the East–West confrontation known as the Cold War. With the outbreak of the Korean War, concerns over the defense of Western Europe rose. Two corps, V and VII, were reactivated under Seventh United States Army in 1950 and American strength in Europe rose from one division to four. Hundreds of thousands of U.S. troops remained stationed in West Germany, with others in Belgium, the Netherlands and the United Kingdom, until the 1990s in anticipation of a possible Soviet attack.
What war occurred after the end of War on Terror?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Alsace is one of the most conservative régions of France. It is one of just two régions in metropolitan France where the conservative right won the 2004 région elections and thus controls the Alsace Regional Council. Conservative leader Nicolas Sarkozy got his best score in Alsace (over 65%) in the second round of the French presidential elections of 2007. The president of the Regional Council is Philippe Richert, a member of the Union for a Popular Movement, elected in the 2010 regional election. The frequently changing status of the région throughout history has left its mark on modern day politics in terms of a particular interest in national identity issues. Alsace is also one of the most pro-EU regions of France. It was one of the few French regions that voted 'yes' to the European Constitution in 2005.
Who was elected head of the Alsace Regional Council in 2007?
A: unanswerable


Context and question: Śuddhodana was determined to see his son become a king, so he prevented him from leaving the palace grounds. But at age 29, despite his father's efforts, Gautama ventured beyond the palace several times. In a series of encounters—known in Buddhist literature as the four sights—he learned of the suffering of ordinary people, encountering an old man, a sick man, a corpse and, finally, an ascetic holy man, apparently content and at peace with the world. These experiences prompted Gautama to abandon royal life and take up a spiritual quest.
What did Buddha's father want him to become?
Answer: a king


Question: Early in the year 343 we find Athanasius had travelled, via Rome, from Alexandria, North Africa, to Gaul; nowadays Belgium / Holland and surrounding areas, where Hosius of Cordoba was Bishop, the great champion of orthodoxy in the West. The two, together, set out for Sardica. A full Council of the Church was convened / summoned there in deference to the Roman pontiff's wishes. The travel was a mammoth task in itself. At this great gathering of prelates, leaders of the Church, the case of Athanasius was taken up once more, that is, Athanasius was formally questioned over misdemeanours and even murder, (a man called Arsenius and using his body for magic, – an absurd charge.). [The Council was convoked for the purpose of inquiring into the charges against Athanasius and other bishops, on account of which they were deposed from their sees by the Semi-Arian Synod of Antioch (341), and went into exile. It was called according to Socrates, (E. H. ii. 20) by the two Emperors, Constans and Constantius; but, according to Baronius by Pope Julius (337–352), (Ad an. 343). One hundred and seventy six attended. Eusebian bishops objected to the admission of Athanasius and other deposed bishops to the Council, except as accused persons to answer the charges brought against them. Their objections were overridden by the orthodox bishops, about a hundred were orthodox, who were the majority. The Eusebians, seeing they had no chance of having their views carried, retired to Philoppopolis in Thrace, Philippopolis (Thracia), where they held an opposition council, under the presidency of the Patriarch of Antioch, and confirmed the decrees of the Synod of Antioch. ]. Once more, at the Council of Sardica, was his innocence reaffirmed. Two conciliar letters were prepared, one to the clergy and faithful of Alexandria, the other to the bishops of Egypt and Libya, in which the will of the Council was made known. Meanwhile, the Eusebian party had gone to Philippopolis, where they issued an anathema against Athanasius and his supporters. The persecution against the orthodox party broke out with renewed vigour, and Constantius was induced to prepare drastic measures against Athanasius and the priests who were devoted to him. Orders were given that if the Saint attempt to re-enter his see, he should be put to death. Athanasius, accordingly, withdrew from Sardica to Naissus in Mysia, where he celebrated the Easter festival of the year 344. It was Hosius who presided over the Council of Sardica, as he did for the First Council of Nicaea, which like the 341 synod, found Athanasius innocent. &. He celebrated his last Easter in exile in Aquileia in April 345, received by bishop Fortunatianus.
Is there an answer to this question:  With whom did Athanasius travel to Africa?

Answer: unanswerable


QUES: Nocturnal migrants minimize predation, avoid overheating, and can feed during the day. One cost of nocturnal migration is the loss of sleep. Migrants may be able to alter their quality of sleep to compensate for the loss.

What is a cost of nocturnal migration?
What is the answer?
ANS:
loss of sleep