Question: Which son of Bernardo Mattarella was an elected judge on the Constitutional Court?

full_context: Document 1: Ruggero Settimo: Ruggero Settimo (19 May 1778 – 12 May 1863) was an Italian politician, diplomat, and patriotic activist from Sicily. The name means "Roger the Seventh", from a family name originating in Pisa (Tuscany). He was a counter-admiral of the Sicilian Fleet. He fought alongside the British fleet in the Mediterranean Sea against the French under Napoleon Bonaparte. He reconquered the island of Malta, and defended the city of Gaeta near Naples. In 1811 he had to retire from the military to health problems. He was a member of the Sicilian government of Prince Castelnovo in 1812 as Minister of the merchant navy. Was a member of the revolutionary junta of 1820-1821 and in 1848 as president of the Sicilian Senate was appointed as Chief of the government of the Kingdom of Sicily and led the Sicilian government until 1849. His family was in legacy for marriage with the last heir of the family Calvello (about 1468), so became proprietary of one of the largest estates in Sicily. With his father Trajan Settim Aversa the feud (fief) was given the title of the Principality of Fitalia. The fief was formed in 1130 after the investiture of King Roger II King of Sicily. King Roger gifted this fief to the husband of the woman who nursed him and his brother Simon.
Document 2: Mario Draghi: Mario Draghi {'1': ", '2': ", '3': 'OMRI', '4': "} (] ; born 3 September 1947) is an Italian economist who has served as President of the European Central Bank since November 2011. He previously served as Chairman of the Financial Stability Board from 2009 to 2011 and Governor of the Bank of Italy from 2005 to 2011.
Document 3: Vito Cascioferro: Vito Cascioferro or Vito Cascio Ferro (January 22, 1862 – September 20, 1943), also known as Don Vito, was a prominent member of the Sicilian Mafia. He also operated for several years in the United States. He is often depicted as the "boss of bosses", although such a position does not exist in the loose structure of Cosa Nostra in Sicily.
Document 4: Mario Moretti: Mario Moretti (born 16 January 1946) is an Italian terrorist. A leading member of the Red Brigades in the late 1970s, he was one of the kidnappers of Aldo Moro, president of Italy's largest party, Democrazia Cristiana, and several times premier, in 1978; he later confessed to killing the politician.
Document 5: Ahmed Maiteeq: Ahmed Omar Maiteeq is a Libyan businessman and politician, originally from Misrata, who was elected Prime Minister of Libya in May 2014. His election as prime minister took place under disputed circumstances. The Justice Ministry decided on 29 May that Maiteeq was not the Prime Minister due to voting procedural issue occurred when the First Deputy of GNC left the session without valid reason. The Libyan Supreme Court was expected to issue a verdict on 5 June 2014 regarding the election of Maiteeq, although it indicated on that day that it believed that the appointment of Maiteeq was invalid, the court stated that appeals should be heard and delayed a final ruling until 9 June. The court ruled on 9 June that Maiteeq appointment was invalid;
Document 6: Sergio Massa: Sergio Tomás Massa (born April 28, 1972) is an Argentine peronist politician who served as Chief of the Cabinet of Ministers from July 2008 to July 2009.
Document 7: Edi Rama: Edi Rama (] ; born 4 July 1964) is an Albanian politician, diplomat, artist, writer and former basketball player, who has been the Prime Minister of Albania since 2013. He is also the first serving Mayor to become Prime Minister. Rama is since 2005 a member and leader of the Socialist Party. Before his election as Prime Minister, Rama held a number of governmental and diplomatic positions. Namely, he previously served as the Minister of Culture, Youth and Sports from 1998 to 2000. Afterwards he became the Mayor of Tirana for at least three-consecutive-terms from 2000 to 2011.
Document 8: Sergio Mattarella: Sergio Mattarella, {'1': ", '2': ", '3': 'OMRI, OMCA', '4': "} (] ; born 23 July 1941) is an Italian politician, lawyer and judge who is the 12th and current President of Italy since 2015. He was a member of Parliament from 1983 to 2008, serving as Minister of Education from 1989 to 1990 and as Minister of Defence from 1999 to 2001. In 2011, he became an elected judge on the Constitutional Court. On 31 January 2015, he was elected by parliament to be the 12th President of the Italian Republic. He is the first Sicilian to have held the post.
Document 9: Bernardo Mattarella: Bernardo Mattarella (15 September 1905 – 1 March 1971) was an Italian politician for the Christian Democrat party ("Democrazia Cristiana", DC). He has been Minister of Italy several times. He was the father of Piersanti Mattarella and Sergio Mattarella, who both became politicians as well; Sergio is the President of the Italian Republic since 3 February 2015 and Piersanti was President of the Regional Government of Sicily, before being assassinated in 1980 by "Cosa Nostra".
Document 10: Edda Mussolini: Edda Mussolini (1 September 1910 – 9 April 1995) was the eldest child of Benito Mussolini, Italy's fascist dictator from 1922 to 1943. Upon her marriage to fascist propagandist and foreign minister Galeazzo Ciano she became Edda Ciano, Countess of Cortellazzo and Buccari. Her husband was executed in January 1944 for dissenting from Mussolini's rule. She strongly denied her involvement in the National Fascist Party regime and had an affair with a Communist after her father's execution by the Italian partisans in April 1945.
Document 11: Santo Versace: Santo Domenico Versace (born 16 Dec. 1944) is the president and co-chief executive officer of Gianni Versace SpA, based in Milan, Italy. Since 2008 he has been elected as Member of the Chamber of Deputies of the Italian Republic in the constituency of Calabria. He is a member of the Alliance for Italy political party, formerly being a member of The People of Freedom.
Document 12: Simonetta Sommaruga: Simonetta Sommaruga (born 14 May 1960) is a Swiss politician of the Social Democratic Party of Switzerland who is a current member of the Swiss Federal Council, the federal government of Switzerland, and head of the Federal Department of Justice and Police (the Swiss justice minister). She served as Vice President of the Swiss Confederation for the year 2014, and in 2015 succeeded to the role of President.
Document 13: Luciano Leggio: Luciano Leggio (] ; 6 January 1925 – 15 November 1993) was an Italian criminal and leading figure of the Sicilian Mafia. He was the head of the Corleonesi, the Mafia faction that originated in the town of Corleone. He's universally known with the surname Liggio, a result of a misspelling in court documents in the 1960s.
Document 14: John Tartamella: John Tartamella (1892– July 12, 1966) was consigliere for over 30 years to Joseph Bonanno and his family. He was considered a very wise and shrewd elder-statesman who was respected throughout La Cosa Nostra. Born in Castellammare del Golfo, Sicily, he "devoted much of his time to the cause of the barbers" . His son was Sereno (Bobby T) Tartamella - a Bonanno soldier and top aide to rebel faction bosses Gaspare DiGregorio and Paul Sciacca acting as a courier between them and Stefano Magaddino, boss of the Buffalo crime family during the bloody "Bonanno War" during the mid/late 1960s. Sereno became a union official for the Beauty Culturist Union. He also was well known for his "joke telling", able to make even the most vicious mob boss smile.
Document 15: Bernardo Provenzano: Bernardo Provenzano (] ; 31 January 1933 – 13 July 2016) was a member of the Sicilian Mafia ("Cosa Nostra") and was suspected of having been the head of the Corleonesi, a Mafia faction that originated in the town of Corleone, and de facto "capo di tutti capi" (boss of all bosses) of the entire Sicilian Mafia until his arrest in 2006.
ground_truth: Sergio Mattarella