Question: Who is the mayor of the birthplace of Emilio Del Bono?

full_context: Document 1: Sergio Mantovani: Sergio Mantovani (May 22, 1929 - February 23, 2001) was a racing driver from Milan, Italy. He entered 8 Formula One World Championship Grands Prix, debuting on September 13, 1953. He started 7 of those races, all for Maserati. His best results were two fifth-place finishes, and he scored a total of 4 championship points. In non-Championship F1 events, he finished third in the Syracuse and Rome Grands Prix in 1954.
Document 2: Sergio Cofferati: Sergio Cofferati (born 30 January 1948) is an Italian politician who was Mayor of Bologna for the Democrats of the Left from 2004 to 2009. He has been a Member of the European Parliament (MEP) from 2009 to 2019, elected as a candidate of the Democratic Party.
Document 3: New York City: The present mayor is Bill de Blasio, the first Democrat since 1993. He was elected in 2013 with over 73% of the vote, and assumed office on January 1, 2014.
Document 4: Alessandro Zampedri: Alessandro Zampedri (born 3 October 1969 in Brescia) is an Italian race car driver. He started three Indianapolis 500s (1995, 1996, and 1997).
Document 5: Learco Guerra: Learco Guerra (14 October 1902 - 7 February 1963) was an Italian professional road racing cyclist. The highlight of his career was his overall win in the 1934 Giro d'Italia. He was born in San Nicolò Po, a "frazione" of Bagnolo San Vito in Lombardy, gained the nickname of "Human Locomotive" for his enduring quality in plain stages. After mediocre attempts to play football, Guerra became a professional cyclist in 1928, at 26. The following year he became Italian champion, racing as an independent or semi-professional.
Document 6: Brescia: The current Mayor of Brescia is Emilio Del Bono (PD), elected on 10 June 2013 and re-elected for a second term on 10 June 2018.
Document 7: Munich: Munich's current mayor is Dieter Reiter of the Social Democratic Party of Germany. Munich has been governed by the SPD for all but six years since 1948. This is atypical because Bavaria – and particularly southern Bavaria – has long been identified with conservative politics, with the Christian Social Union gaining absolute majorities among the Bavarian electorate in many elections at the communal, state, and federal levels, and leading the Bavarian state government for all but three years since 1946. Bavaria's second most populous city, Nuremberg, is also one of the very few Bavarian cities governed by an SPD-led coalition.
Document 8: Vittoriano Guareschi: The son of a Parmesan Moto Guzzi distributor, Guareschi began his racing career in 1988 at the age of 17. He raced for the Cagiva factory racing team in the 125 cc Italian national championship alongside his teammate and future world champion, Valentino Rossi. Guareschi progressed to the 600 cc Italian national championship where, he finished in third place in three consecutive seasons between 1992 and 1994. In 1995, he won the Italian Supermono national championship for single-cylinder motorcycles aboard a Yamaha SZR660.
Document 9: Aymo Maggi: Aymo Maggi (30 July 1903 – 23 October 1961) was an Italian racing car driver from Brescia. He was the "conte di Gradella" based in Pandino outside Cremona.
Document 10: Emilio Villoresi: Emilio Villoresi was born in Milan, Lombardy, the younger brother of the star Maserati driver, Luigi Villoresi who co-piloted with him in several races at the beginning of their careers. Emilio Villoresi and his brother competed in the 1935 and 1936 Mille Miglia driving a Fiat 508CS Balilla Sport but after a disappointing finish they purchased a Maserati which they drove individually in different races. Emilio was so successful that he was signed to drive an Alfa Romeo for Scuderia Ferrari in the 1937 season.
Document 11: Carlo Facetti: Carlo Giovanni Facetti (born 26 June 1935 in Cormano, Lombardy) is a former racing driver from Italy, mainly known for his success in touring car and sports car racing. In his single attempt at Formula One he failed to qualify for the 1974 Italian Grand Prix with a Brabham BT42 run by the Scuderia Finotto team.
Document 12: Vincenzo Trucco: Vincenzo Trucco was a racing driver from Milan, Italy. He was the Isotta Fraschini works driver and won the 1908 Targa Florio and participated to Indy 500 in 1913. Trucco was also friend and mentor of Alfieri Maserati, with whom he patented the spark plug.
Document 13: Auckland: In October 2010, Manukau City mayor Len Brown was elected mayor of the amalgamated Auckland Council. He was re-elected for a second term in October 2013. Brown did not stand for re-election in the 2016 mayoral election, and was succeeded by successful candidate Phil Goff in October 2016. Twenty councillors make up the remainder of the Auckland Council governing body, elected from thirteen electoral wards.
Document 14: Ljubljana: Between 2002 and 2006, Danica Simšič was mayor of the municipality. Since the municipal elections of 22 October 2006 until his confirmation as a deputy in the National Assembly of Slovenian in December 2011, Zoran Janković, previously the managing director of the Mercator retail chain, was the mayor of Ljubljana. In 2006, he won 62.99% of the popular vote. On 10 October 2010, Janković was re-elected for another four-year term with 64.79% of the vote. From 2006 until October 2010, the majority on the city council (the Zoran Janković List) held 23 of 45 seats. On 10 October 2010, Janković's list won 25 out of 45 seats in the city council. From December 2011 onwards, when Janković's list won the early parliamentary election, the deputy mayor Aleš Čerin was decided by him to lead the municipality. Čerin did not hold the post of mayor. After Janković had failed to be elected as the Prime Minister in the National Assembly, he participated at the mayoral by-election on 25 March 2012 and was elected for the third time with 61% of the vote. He retook the leadership of the city council on 11 April 2012.
Document 15: Boppard: The mayor is elected every eight years. Boppard's current mayor, elected on 1 August 1997 and again on 10 April 2005, is Dr. Walter Bersch (born 1954), and his deputies are Dr. Heinz Bengart, Ruth Schneider and Horst-Peter Hassbach.
ground_truth: Emilio Del Bono
sub_queries: Aymo Maggi >> place of birth Answer: Brescia
Who was in charge of Brescia ? Answer: Emilio Del Bono