Question: What year did Sender Freies in Fanny von Arnstein's father's birthplace end?

full_context: Document 1: Miguel Itzigsohn: Itzigsohn was a professor of spherical and practical astronomy. From 1955 to 1972, he was director of the extrameridian astronomy department at the La Plata Astronomical Observatory, specializing in astrometry and celestial mechanics. He was responsible for the surge in observational and computational activity in studies of minor planets in Argentina following World War II.
Document 2: Schweizer Radio DRS: On 1 January 2011, Schweizer Fernsehen (SF) and Schweizer Radio DRS began the process of merging the two entities into Schweizer Radio und Fernsehen (SRF). On 16 December 2012, the merger was complete, with SF and SR DSR adopting the SRF name to their television and radio stations.
Document 3: Ashkenazi Jews: According to 16th-century mystic Rabbi Elijah of Chelm, Ashkenazi Jews lived in Jerusalem during the 11th century. The story is told that a German-speaking Palestinian Jew saved the life of a young German man surnamed Dolberger. So when the knights of the First Crusade came to siege Jerusalem, one of Dolberger's family members who was among them rescued Jews in Palestine and carried them back to Worms to repay the favor. Further evidence of German communities in the holy city comes in the form of halakhic questions sent from Germany to Jerusalem during the second half of the 11th century.
Document 4: Ostdeutscher Rundfunk Brandenburg: Ostdeutscher Rundfunk Brandenburg (ORB – "East German Broadcasting Brandenburg"), based in Potsdam, was the public broadcaster for the German federal state of Brandenburg from 12 October 1991 until 30 April 2003. It was a member organization of the consortium of public-law broadcasting organizations in Germany, ARD.
Document 5: Aline Caroline de Rothschild: Aline Caroline de Rothschild, Lady Sassoon (21 October 1867 – 28 July 1909) was a French socialite and daughter of Cécile Anspach and Baron Gustave de Rothschild of the Rothschild family.
Document 6: Sender Freies Berlin: Sender Freies Berlin (SFB) () was the ARD public radio and television service for West Berlin from 1 June 1954 until 1990 and for Berlin as a whole from German reunification until 30 April 2003. On 1 May 2003 it merged with Ostdeutscher Rundfunk Brandenburg to form "Rundfunk Berlin-Brandenburg".
Document 7: German reunification: The German reunification (German: Deutsche Wiedervereinigung) was the process in 1990 in which the German Democratic Republic (GDR / DDR / East Germany) joined the Federal Republic of Germany (FRG / West Germany) to form the reunited nation of Germany, and when Berlin reunited into a single city, as provided by its then Grundgesetz constitution Article 23. The end of the unification process is officially referred to as German unity (German: Deutsche Einheit), celebrated on 3 October (German Unity Day) (German: Tag der deutschen Einheit). Following German reunification, Berlin was once again designated as the capital of united Germany.
Document 8: Dan Margalit: Dan Margalit was born and raised in Tel Aviv. His father, Israel, was a doctor, and his mother, Ora, was a psychologist. He studied international relations and modern Jewish history at the Hebrew University of Jerusalem. He began writing for the Israeli newspaper "Haaretz" in the 1960s.
Document 9: Daniel Itzig: Daniel Itzig (also known as Daniel Yoffe 18 March 1723 in Berlin – 17 May 1799 in Potsdam) was a Court Jew of Kings Frederick II the Great and Frederick William II of Prussia.
Document 10: Wilhelm Carl von Rothschild: Wilhelm Carl von Rothschild was the son of Baron Carl Mayer von Rothschild of Naples and Adelheid Hertz. He was known by some as "The Tzadik of the Rothschild House." He strongly supported many Orthodox Jewish institutions and studied in Yeshivas. He married his cousin Mathilde Hannah von Rothschild, the second oldest daughter of Anselm von Rothschild, a chief of the Vienna House of Rothschilds in 1849. The couple first resided in the Rothschild house on the Zeil (Zeilpalast), but later moved to a palace in Grüneburg, and also lived in a villa in Königstein im Taunus. They had three daughters, two of which survived to adulthood. Adelheid von Rothschild married her cousin Edmond James de Rothschild, while her younger sister Minna Caroline Rothschild married Maximilian Goldschmidt, who adopted the name "Goldschmidt-Rothschild" after Wilhelm Carl's death in 1901.
Document 11: Mendelssohn & Co.: It was established in 1795 by Joseph Mendelssohn in Berlin. In 1804, his younger brother Abraham Mendelssohn Bartholdy joined the company. In 1815, they moved into their new headquarters at Jägerstraße 51, thereby laying the foundations of Berlin's financial district. Mendelssohn & Co. remained in that building until its divestiture in 1939.
Document 12: Fanny von Arnstein: Fanny Arnstein was born the daughter of Daniel Itzig, and was a member of the extensive and influential Jewish Itzig family.
Document 13: Nordwestdeutscher Rundfunk: Nordwestdeutscher Rundfunk ("Northwest German Broadcasting" - NWDR) was the organization responsible for public broadcasting in the German Länder of Hamburg, Lower Saxony, Schleswig-Holstein and North Rhine-Westphalia from 22 September 1945 to 31 December 1955. Until 1954, it was also responsible for broadcasting in West Berlin. NWDR was a founder member of the consortium of public-law broadcasting institutions of the Federal Republic of Germany, the ARD.
Document 14: Guy Wildenstein: Born in New York City, Guy Wildenstein is the son of Daniel Wildenstein, an art dealer, racehorse owner and breeder in France. His family fled France following the German occupation during World War II to the United States, where Guy was born. He is a member of the Assembly of French Citizens Abroad.
Document 15: Leo Arons: Leo Arons came from a wealthy Jewish banking family in Berlin. His parents were Albert Arons (1826-1897), a partner in the prestigious private banking house "Gebrüder Arons", and Clara Goldschmidt (1837-1867). In 1887 Leo Arons married Johanna Bleichröder (1861-1938), a daughter of the banker Julius Bleichröder (1828-1907). Arons' brother, the banker Paul Arons (1861-1932), married Johanna's sister Gertrude (1865-1917) a few years later.
ground_truth: 30 April 2003
sub_queries: Fanny von Arnstein >> father Answer: Daniel Itzig
Daniel Itzig >> place of birth Answer: Berlin
What year did Sender Freies Berlin end? Answer: 30 April 2003