Question: Who is the mayor of the city where Pietro Gnocchi died?

full_context: Document 1: Pietro Locatelli: Pietro Antonio Locatelli (3 September 1695 in Bergamo – 30 March 1764 in Amsterdam) was an Italian Baroque composer and violinist.
Document 2: Giovanni Legrenzi: Giovanni Legrenzi (baptized August 12, 1626 – May 27, 1690) was an Italian composer of opera, vocal and instrumental music, and organist, of the Baroque era. He was one of the most prominent composers in Venice in the late 17th century, and extremely influential in the development of late Baroque idioms across northern Italy.
Document 3: Cyprus: Epic poetry, notably the "acritic songs", flourished during Middle Ages. Two chronicles, one written by Leontios Machairas and the other by Georgios Voustronios, cover the entire Middle Ages until the end of Frankish rule (4th century–1489). Poèmes d'amour written in medieval Greek Cypriot date back from the 16th century. Some of them are actual translations of poems written by Petrarch, Bembo, Ariosto and G. Sannazzaro. Many Cypriot scholars fled Cyprus at troubled times such as Ioannis Kigalas (c. 1622–1687) who migrated from Cyprus to Italy in the 17th century, several of his works have survived in books of other scholars.
Document 4: Akureyri: The last elections to the town council were held on May 31, 2014. The People's List (Listi fólksins), which won an outright majority in 2010, and The Town List (Bæjarlistinn) merged into L-list, The Town List of Akureyri. They had seven representatives together but now have only two, 18.8%. The Independence Party (Sjálfstæðisflokkurinn) received the most votes, three seats in the council, 25.8%, instead of only one previously. Social Democratic Alliance (Samfylkingin) and Progressive Party (Framsóknarflokkurinn) each got two seats instead of the previous one each. Left-Green Movement (Vinstri hreyfingin grænt framboð) and Bright Future (Björt framtíð) each got one seat. L-list, Social Democratic Alliance, and Progressive Party formed a new majority in the council. The new majority decided that Eiríkur Björn Björgvinsson, mayor of Akureyri since 2010, would continue to serve as mayor.
Document 5: 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 6: Pietro Gnocchi: Pietro Gnocchi (February 27, 1689 – December 9, 1775) was an Italian composer, choir director, historian, and geographer of the late Baroque era, active mainly in Brescia, where he was choir director of Brescia Cathedral. In addition to composing an abundance of eccentrically-titled sacred music, all of which remains in manuscript, he wrote a 25-volume history of ancient Greek colonies.
Document 7: Giuseppe Carcani: Giuseppe Carcani (c.1703–1779) was an Italian composer of 18th century music. He was born in Crema, and died in Piacenza. He composed works for instruments, organ, and voice. During his career, Carcani held positions in at least one cathedral of Italy. Few of his works have survived.
Document 8: Giovio Series: The Giovio Series, also known as the Giovio Collection or Giovio Portraits, is a series of 484 portraits assembled by the 16th-century Italian Renaissance historian and biographer Paolo Giovio. It includes portraits of literary figures, rulers, statesmen and other dignitaries, many of which were done from life. Intended by Giovio as a public archive of famous men, the collection was originally housed in a specially-built museum on the shore of Lake Como. Although the original collection has not survived intact, a set of copies made for Cosimo I de' Medici now has a permanent home in Florence's Uffizi Gallery.
Document 9: 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.
Document 10: 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 11: 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 12: Pietro Scalvini: Pietro Scalvini (1718–1792) was an Italian painter of the late-Baroque and Neoclassic period, active in Brescia. He was inspired by Tiepolo and active in fresco painting of churches.
Document 13: 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 14: 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 15: 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.
ground_truth: Emilio Del Bono
sub_queries: In what city did Pietro Gnocchi die? Answer: Brescia
Who was in charge of Brescia ? Answer: Emilio Del Bono