Question: What year did the Sender Freies of the city the creator of The Vegetative Sculpture I died end?

full_context: Document 1: Vegetative Sculpture I: Vegetative Sculpture I is a public art work by artist Bernhard Heiliger located at the Lynden Sculpture Garden near Milwaukee, Wisconsin. The sculpture has an abstract form; it is installed on the patio.
Document 2: 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 3: Johannes Gutenberg: There are many statues of Gutenberg in Germany, including the famous one by Bertel Thorvaldsen (1837) at Gutenbergplatz in Mainz, home to the eponymous Johannes Gutenberg University of Mainz and the Gutenberg Museum on the history of early printing. The latter publishes the "Gutenberg-Jahrbuch", the leading periodical in the field.
Document 4: Bernhard Heiden: Bernhard Heiden (b. Frankfurt-am-Main, August 24, 1910; d. Bloomington, IN, April 30, 2000) was a German and American composer and music teacher, who studied under and was heavily influenced by Paul Hindemith. Bernhard Heiden, the son of Ernst Levi and Martha (Heiden-Heimer) was originally named Bernhard Levi, but he later changed his name.
Document 5: Twist for Max: Twist for Max is a public art work by artist Bernard Kirschenbaum located at the Lynden Sculpture Garden near Milwaukee, Wisconsin. The abstract sculpture is a column of twisting aluminum; it is installed on the lawn.
Document 6: Floating Sculpture No. 3: Floating Sculpture No. 3 is a public art work by artist Marta Pan located at the Lynden Sculpture Garden near Milwaukee, Wisconsin. The red fiberglass sculpture is kinetic; it is installed in the pond.
Document 7: 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 8: Way Four: Way Four is a public art work by artist Bernard Kirschenbaum at the Lynden Sculpture Garden near Milwaukee, Wisconsin. The stainless steel sculpture is an open circle that creates an orbit for two triangles; it is installed on the lawn.
Document 9: Bernhard Mann: Bernhard Mann (born in Stuttgart, Germany, 3 December 1950) is a Social Scientist and Master of Public Health, Professor emeritus of Health and Social Management at the FHM Bielefeld - University of Applied Sciences, former Professor of Health Management and Vice-President at the University of Applied Sciences Bamberg, Adjunct Professor of Public Health, Social Medicine and Sociology at the University of Koblenz-Landau, at the Berlin School of Public Health - Charité, Medical University, at several Universities of Educational Cooperation as well as of Applied Sciences and Public-Health-Coordinator of the german program at the IESS - Institut Européen des Sciences de la Santé Casablanca, Maroc. Since 2018 Mann is editorial member of the World Journal of Public Health. He is a Politician, representative of the Social Democratic Party.
Document 10: 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 11: Unfolding (sculpture): Unfolding is a public art work by artist Bernhard Heiliger located at the Lynden Sculpture Garden near Milwaukee, Wisconsin. The sculpture has an abstract form; it is installed on the patio.
Document 12: 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 13: 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 14: Bernhard Heiliger: Bernhard Heiliger (11 November 1915, Stettin - 25 October 1995, Berlin) was a German artist. He was considered "West Germany's foremost sculptor", and his large public artworks are a prominent presence in many German cities, especially Berlin.
Document 15: Bernd Luz: Bernd Luz (born May 20, 1966 in Rottweil, Germany) is a contemporary German visual artist and communication designer, whose work bridges the divide between independent art and commissioned work, the abstract and objective.
ground_truth: 30 April 2003
sub_queries: The Vegetative Sculpture I was made by whom? Answer: Bernhard Heiliger
What city did Bernhard Heiliger live when he died? Answer: Berlin
What year did Sender Freies Berlin end? Answer: 30 April 2003