Problem: Mandolin:

Mandolin has also been used in blues music, most notably by Ry Cooder, who performed outstanding covers on his very first recordings, Yank Rachell, Johnny "Man" Young, Carl Martin, and Gerry Hundt. Howard Armstrong, who is famous for blues violin, got his start with his father's mandolin and played in string bands similar to the other Tennessee string bands he came into contact with, with band makeup including "mandolins and fiddles and guitars and banjos. And once in a while they would ease a little ukulele in there and a bass fiddle." Other blues players from the era's string bands include Willie Black (Whistler And His Jug Band), Dink Brister, Jim Hill, Charles Johnson, Coley Jones (Dallas String Band), Bobby Leecan (Need More Band), Alfred Martin, Charlie McCoy (1909-1950), Al Miller, Matthew Prater, and Herb Quinn.

Who got his start with his father's mandolin?
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A: Howard Armstrong,

Problem: Korean War:

In order to enlist Stalin's support, Zhou and a Chinese delegation left for Moscow on 8 October, arriving there on 10 October at which point they flew to Stalin's home at the Black Sea. There they conferred with the top Soviet leadership which included Joseph Stalin as well as Vyacheslav Molotov, Lavrentiy Beria and Georgi Malenkov. Stalin initially agreed to send military equipment and ammunition, but warned Zhou that the Soviet Union's air force would need two or three months to prepare any operations. In a subsequent meeting, Stalin told Zhou that he would only provide China with equipment on a credit basis, and that the Soviet air force would only operate over Chinese airspace, and only after an undisclosed period of time. Stalin did not agree to send either military equipment or air support until March 1951. Mao did not find Soviet air support especially useful, as the fighting was going to take place on the south side of the Yalu. Soviet shipments of materiel, when they did arrive, were limited to small quantities of trucks, grenades, machine guns, and the like.

Where did the fighting take place that rendered Soviet air support useless to the Chinese?
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A: the south side of the Yalu

Problem: States of Germany:

As the premiers did not come to an agreement on this question, the Parliamentary Council was supposed to address this issue. Its provisions are reflected in Article 29. There was a binding provision for a new delimitation of the federal territory: the Federal Territory must be revised ... (paragraph 1). Moreover, in territories or parts of territories whose affiliation with a Land had changed after 8 May 1945 without a referendum, people were allowed to petition for a revision of the current status within a year after the promulgation of the Basic Law (paragraph 2). If at least one tenth of those entitled to vote in Bundestag elections were in favour of a revision, the federal government had to include the proposal into its legislation. Then a referendum was required in each territory or part of a territory whose affiliation was to be changed (paragraph 3). The proposal should not take effect if within any of the affected territories a majority rejected the change. In this case, the bill had to be introduced again and after passing had to be confirmed by referendum in the Federal Republic as a whole (paragraph 4). The reorganization should be completed within three years after the Basic Law had come into force (paragraph 6).

What fraction of people voted in Bundestag elections?
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A: unanswerable

Problem: Israel:

The names Land of Israel and Children of Israel have historically been used to refer to the biblical Kingdom of Israel and the entire Jewish people respectively. The name "Israel" (Standard Yisrael, Israil; Septuagint Greek: Israel; 'El(God) persists/rules' though, after Hosea 12:4 often interpreted as "struggle with God") in these phrases refers to the patriarch Jacob who, according to the Hebrew Bible, was given the name after he successfully wrestled with the angel of the Lord. Jacob's twelve sons became the ancestors of the Israelites, also known as the Twelve Tribes of Israel or Children of Israel. Jacob and his sons had lived in Canaan but were forced by famine to go into Egypt for four generations, lasting 430 years, until Moses, a great-great grandson of Jacob, led the Israelites back into Canaan during the "Exodus". The earliest known archaeological artifact to mention the word "Israel" is the Merneptah Stele of ancient Egypt (dated to the late 13th century BCE).

Who led the Israelites back into Canaan during the "Exodus?"
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A:
Moses