Question: Who was the father of the cast member of The Wall – Live in the city where the union leader met?

full_context: Document 1: German Revolution of 1918–19: According to the predominant opinion of modern historians, the establishment of a Bolshevik-style council government in Germany on 9–10 November 1918 was impossible. Yet the Ebert government felt threatened by a coup from the left, and was certainly undermined by the Spartakus movement; thus it co-operated with the Supreme Command and the Freikorps. The brutal actions of the Freikorps during the various revolts estranged many left democrats from the SPD. They regarded the behavior of Ebert, Noske and the other SPD leaders during the revolution as an outright betrayal of their own followers.
Document 2: Michael John Fles: Michael John Fles was born to a Dutch father, George Fles, and a British mother, Pearl Rimel. As conscious communists, his parents had moved to the Soviet Union, where his father fell victim to Joseph Stalin's Great Purge. The mother, pregnant with Michael John, left the Soviet Union to give birth in London. Mother and son later emigrated to the United States, where Pearl Rimel found employment in the aircraft industry. Michael John grew up in Los Angeles and Ojai, California, where he graduated from the Ojai Valley School in 1950.
Document 3: Berlin Wall: The Berlin Wall (German: Berliner Mauer, pronounced (bɛʁˈliːnɐ ˈmaʊ̯ɐ) (listen)) was a guarded concrete barrier that physically and ideologically divided Berlin from 1961 to 1989. Constructed by the German Democratic Republic (GDR, East Germany), starting on 13 August 1961, the Wall cut off (by land) West Berlin from virtually all of surrounding East Germany and East Berlin until government officials opened it in November 1989. Its demolition officially began on 13 June 1990 and finished in 1992. The barrier included guard towers placed along large concrete walls, accompanied by a wide area (later known as the ``death strip '') that contained anti-vehicle trenches,`` fakir beds'' and other defenses. The Eastern Bloc portrayed the Wall as protecting its population from fascist elements conspiring to prevent the ``will of the people ''in building a socialist state in East Germany.
Document 4: Roger Waters discography: Roger Waterss primary instrument is the electric bass guitar. He briefly played a Höfner bass but replaced it with a Rickenbacker RM-1999/4001S, until around 1970 when he switched to Fender Precision basses. He often plays bass using a pick but is also known to play fingerstyle. Not only a bassist and vocalist, Waters has experimented with the EMS Synthi A and VCS 3 synthesisers and has played electric rhythm and acoustic guitars in recordings and in concert. Throughout his career he has used Selmer, WEM, Hiwatt and Ashdown amplifiers, also employing delay, tremolo, chorus, panning and phaser effects in his music.
Document 5: German Revolution of 1918–19: To prevent this development, the union leaders under Carl Legien and the representatives of big industry under Hugo Stinnes and Carl Friedrich von Siemens met in Berlin from 9 to 12 November. On 15 November, they signed an agreement with advantages for both sides: the union representatives promised to guarantee orderly production, to end wildcat strikes, to drive back the influence of the councils and to prevent a nationalisation of means of production. For their part, the employers guaranteed to introduce the eight-hour day, which the workers had demanded in vain for years. The employers agreed to the union claim of sole representation and to the lasting recognition of the unions instead of the councils. Both parties formed a "Central Committee for the Maintenance of the Economy" (Zentralausschuss für die Aufrechterhaltung der Wirtschaft).
Document 6: Treaty of Versailles: After Scheidemann ′ s resignation, a new coalition government was formed under Gustav Bauer. President Friedrich Ebert knew that Germany was in an impossible situation. Although he shared his countrymen's disgust with the treaty, he was sober enough to consider the possibility that the government would not be in a position to reject it. He believed that if Germany refused to sign the treaty, the Allies would invade Germany from the west -- and there was no guarantee that the army would be able to make a stand in the event of an invasion. With this in mind, he asked Field Marshal Paul von Hindenburg if the army was capable of any meaningful resistance in the event the Allies resumed the war. If there was even the slightest chance that the army could hold out, Ebert intended to recommend against ratifying the treaty. Hindenburg -- after prodding from his chief of staff, Wilhelm Groener -- concluded the army could not resume the war even on a limited scale. However, rather than inform Ebert himself, he had Groener inform the government that the army would be in an untenable position in the event of renewed hostilities. Upon receiving this, the new government recommended signing the treaty. The National Assembly voted in favour of signing the treaty by 237 to 138, with five abstentions (there were 421 delegates in total). This result was wired to Clemenceau just hours before the deadline. Foreign minister Hermann Müller and colonial minister Johannes Bell travelled to Versailles to sign the treaty on behalf of Germany. The treaty was signed on 28 June 1919 and ratified by the National Assembly on 9 July by a vote of 209 to 116.
Document 7: Idwal Robling: Robling was born in Ynyshir in the Rhondda Valley, where he attended the local grammar school. His education was interrupted by the Second World War, and upon being called up was accepted for service in the Royal Navy. However, he was selected by ballot to become a Bevin Boy so instead of going to the Navy he was conscripted to work in the coal mines. After the war, he resumed his education and qualified as a teacher after attending Caerleon College and Loughborough University, although instead of teaching he decided on a different career and became a manager at the Lovell's sweet factory in Newport, Monmouthshire.
Document 8: Roger Waters: Waters was born on 6 September 1943, the younger of two boys, to Mary (née Whyte; 1913–2009) and Eric Fletcher Waters (1914–1944), in Great Bookham, Surrey. His father, the son of a coal miner and Labour Party activist, was a schoolteacher, a devout Christian, and a Communist Party member. In the early years of the Second World War, Waters' father was a conscientious objector who drove an ambulance during the Blitz.
Document 9: Berlin Wall: The Berlin Wall (German: Berliner Mauer) was a guarded concrete barrier that physically and ideologically divided Berlin from 1961 to 1989. Constructed by the German Democratic Republic (GDR, East Germany), starting on 13 August 1961, the Wall completely cut off (by land) West Berlin from surrounding East Germany and from East Berlin until government officials opened it in November 1989. Its demolition officially began on 13 June 1990 and finished in 1992. The barrier included guard towers placed along large concrete walls, accompanied by a wide area (later known as the ``death strip '') that contained anti-vehicle trenches,`` fakir beds'' and other defenses. The Eastern Bloc portrayed the Wall as protecting its population from fascist elements conspiring to prevent the ``will of the people ''in building a socialist state in East Germany. In practice, the Wall served to prevent the massive emigration and defection that had marked East Germany and the communist Eastern Bloc during the post-World War II period.
Document 10: Berlin Wall: In 1989 a series of revolutions in nearby Eastern Bloc countries -- Poland and Hungary in particular -- caused a chain reaction in East Germany that ultimately resulted in the demise of the Wall. After several weeks of civil unrest, the East German government announced on 9 November 1989 that all GDR citizens could visit West Germany and West Berlin. Crowds of East Germans crossed and climbed onto the Wall, joined by West Germans on the other side in a celebratory atmosphere. Over the next few weeks, euphoric people and souvenir hunters chipped away parts of the Wall; the governments later used industrial equipment to remove most of what was left. The ``fall of the Berlin Wall ''paved the way for German reunification, which formally took place on 3 October 1990.
Document 11: Klaus von Oertzen: During 1932, four motor manufacturers of Saxony in Germany, namely Audi, DKW, Horch and Wanderer, amalgamated under the pressures of the depressed German economy to form Auto Union. The new company’s four-ringed emblem, which von Oertzen suggested, can still be seen in the modern Audi logo. Baron von Oertzen, who had been in charge of sales at Wanderer, became sales director and chairman of the board of directors of Auto Union.
Document 12: Judah Waten: Born in Odessa to a Russian-Jewish family, Judah Waten arrived in Western Australia in 1914. He attended Christian Brothers' College, Perth and, moving to Melbourne in 1926, University High School, Melbourne. He joined the Communist Party of Australia while still at school. Between 1931 and 1933, he visited Europe, became engaged in left-wing political activities in England, and spent three months in Wormwood Scrubs Prison.
Document 13: Scorpions (band): On the Savage Amusement tour in 1988, the Scorpions became only the second Western group (not American) to play in the Soviet Union. Uriah Heep had performed in December 1987 in Leningrad. The following year the band returned to perform at the Moscow Music Peace Festival. As a result, the Scorpions developed an extended Russian fan base and still return to perform. Also in 1989, Scorpions released the compilation album Best of Rockers 'n' Ballads, which, in addition to the band's hits from 1979 to 1988, included several rare or previously unreleased tracks: "Hey You", from the Animal Magnetism sessions; the re-recorded "long version" of "Is There Anybody There?"; and a cover of The Who's "I Can't Explain", which was also included on that same year's Stairway to Heaven/Highway to Hell charity compilation album. This is the Scorpions' only compilation album to be certified platinum in the United States.Wishing to distance themselves from the Savage Amusement style, the band separated from their long-time producer and "Sixth Scorpion", Dieter Dierks, replacing him with Keith Olsen when they returned to the studio in 1990. Crazy World was released that year and displayed a less polished sound. The album was propelled in large part by the massive success of the ballad "Wind of Change". The song muses on the socio-political changes that were occurring in Eastern Europe and other parts of the world at the end of the Cold War. Crazy World is the band's last album to receive gold or platinum certification in the United States. On 21 July 1990 they joined many other guests for Roger Waters' massive performance of The Wall in Berlin. Scorpions performed both versions of "In the Flesh" from The Wall.
Document 14: The Wall – Live in Berlin: The Wall – Live in Berlin was a live concert performance by Roger Waters and numerous guest artists, of the Pink Floyd studio album "The Wall", itself largely written by Waters during his time with the band. The show was held in Berlin on 21 July 1990, to commemorate the fall of the Berlin Wall eight months earlier. A live album of the concert was released 21 August 1990. A video of the concert was also commercially released.
Document 15: Modern history: Another action in 1917 that is of note was the armistice signed between Russia and the Central Powers at Brest-Litovsk. As a condition for peace, the treaty by the Central Powers conceded huge portions of the former Russian Empire to Imperial Germany and the Ottoman Empire, greatly upsetting nationalists and conservatives. The Bolsheviks made peace with the German Empire and the Central Powers, as they had promised the Russian people prior to the Revolution. Vladimir Lenin's decision has been attributed to his sponsorship by the foreign office of Wilhelm II, German Emperor, offered by the latter in hopes that with a revolution, Russia would withdraw from World War I. This suspicion was bolstered by the German Foreign Ministry's sponsorship of Lenin's return to Petrograd. The Western Allies expressed their dismay at the Bolsheviks, upset at:
ground_truth: Eric Fletcher Waters
sub_queries: Where did the union leader meet? Answer: Berlin
The Wall – Live in Berlin >> cast member Answer: Roger Waters
The father of Roger Waters was who? Answer: Eric Fletcher Waters