question: What is the date of death of Victor-François, 8Th Duc De Broglie's father?
context: [["Maurice de Broglie", ["Louis- C\u00e9sar- Victor- Maurice, 6th duc de Broglie( 27 April 1875 \u2013 14 July 1960) was a French physicist.", "Brother of the theoretical physicist, Louis de Broglie."]], ["Victor-Maurice, comte de Broglie", ["Victor- Maurice, comte de Broglie( 12 March 16474 August 1727) was a French soldier and general.", "Victor- Maurice de Broglie was born in the De Broglie house, a noble family originally from Piedmont.", "He was the son of Fran\u00e7ois- Marie, comte de Broglie and Angelique de Vassal, Countess of Favria.", "After the death of his father he inherited the countships of Revel and de Broglie, the marquisate of Senonches and also received the Government of La Bassee, near Lille.", "He served under Cond\u00e9, Turenne, and other commanders of the age of Louis XIV in the Franco- Dutch War and other conflicts.", "He was named\" mar\u00e9chal de camp\" in 1676, lieutenant- general in 1688, and finally marshal of France in 1724, just three years before his death.", "He had three sons, one of whom predeceased him.", "The second son, Charles- Guillaume, marquis de Broglie, was his heir, while the third son, Fran\u00e7ois- Marie, a general and a marshal of France like his father, became the first duc de Broglie."]], ["Philippe-Maurice, 9th duc de Broglie", ["Philippe- Maurice Albert Victor Am\u00e9d\u00e9e C\u00e9sar, 9th duc de Broglie( born 28 September 1960) is a French aristocrat and duke.", "The duke was born in Paris as the second son of Prince Jean de Broglie( 1921 \u2013 1976) and Micheline Segard( 1925 \u2013 1997).", "He inherited the dukedom after the death of his older brother Victor- Fran\u00e7ois in 2012.", "The duke \u2019s heir presumptive is his younger brother, Louis- Albert de Broglie( born 15 March 1963), prince of Broglie."]], ["Victor de Broglie (1756\u20131794)", ["Charles- Louis-Victor, prince de Broglie, called Victor de Broglie( 22 September 1756 \u2013 27 June 1794) was a French soldier and politician."]], ["Victor-Fran\u00e7ois, 8th duc de Broglie", ["Victor-Fran\u00e7ois Marie L\u00e9on, 8th duc de Broglie (25 March 1949, in Paris \u2013 12 February 2012, in Broglie) was a French aristocrat and holder of the title of duc de Broglie.", "The duke was born in Paris, the eldest son of Prince Jean de Broglie (1921\u20131976).", "He acceded to the ducal title in 1987, after the death of his distant cousin, physicist and Nobel laureate Louis, 7th duc de Broglie, without heirs.", "His father Jean's great-grandfather, Albert, 4th duc de Broglie, was Louis de Broglie's grandfather, and there was no other surviving senior male.", "The duke was active in local politics in the Eure, and has served as mayor of the ducal seat of Broglie.", "He died suddenly in castle of Broglie on 12 February 2012 (\"Le Figaro\", 14 February 2012, p. 15).", "The duke was unmarried, and his titles were inherited by his younger brother, also unmarried.", "However, there is another younger brother and several junior cousins, some with young sons."]], ["Jean de Broglie", ["Prince Jean Marie Fran\u00e7ois Ferdinand de Broglie (21 June 1921 \u2013 24 December 1976) was a French politician.", "Born in Paris, he was one of the negotiators of the \u00c9vian Accords.", "Jean de Broglie was assassinated on 24 December 1976 while coming out of the house of Pierre de Varga.", "His financial advisor, Varga was quickly arrested; in 1981, he was sentenced to ten years imprisonment for complicity in the assassination.", "Jean de Broglie was the first son of Prince Eugene Marie Am\u00e9d\u00e9e de Broglie (1891\u20131957), himself the fourth son of Prince Fran\u00e7ois Marie Albert de Broglie (1851\u20131939), himself the fourth son of Albert de Broglie, 4th duc de Broglie, whose mother, Albertine de Sta\u00ebl-Holstein (1797\u20131838), was the daughter of Germaine de Sta\u00ebl and, reputedly, Benjamin Constant.", "By his wife Micheline Segard (1925\u20131997), he had three sons:\nPresident de Assembly National 1959"]], ["Victor de Broglie (1846\u20131906)", ["Louis- Alphonse- Victor, 5th duc de Broglie, called Victor de Broglie( 30 October 1846 \u2013 26 August 1906), was a French aristocrat."]], ["Louis de Broglie", ["Louis Victor Pierre Raymond de Broglie, 7th duc de Broglie( 15 August 1892 \u2013 19 March 1987) was a French physicist who made groundbreaking contributions to quantum theory.", "In his 1924 PhD thesis, he postulated the wave nature of electrons and suggested that all matter has wave properties.", "This concept is known as the de Broglie hypothesis, an example of wave \u2013 particle duality, and forms a central part of the theory of quantum mechanics.", "De Broglie won the Nobel Prize for Physics in 1929, after the wave- like behaviour of matter was first experimentally demonstrated in 1927.", "The 1925 pilot- wave model, and the wave- like behaviour of particles discovered by de Broglie was used by Erwin Schr\u00f6dinger in his formulation of wave mechanics.", "The pilot- wave model and interpretation was then abandoned, in favor of the quantum formalism, until 1952 when it was rediscovered and enhanced by David Bohm.", "Louis de Broglie was the sixteenth member elected to occupy seat 1 of the Acad\u00e9mie fran\u00e7aise in 1944, and served as Perpetual Secretary of the French Academy of Sciences.", "De Broglie became the first high- level scientist to call for establishment of a multi-national laboratory, a proposal that led to the establishment of the European Organization for Nuclear Research( CERN)."]], ["Victor-Fran\u00e7ois, 2nd duc de Broglie", ["Victor Fran\u00e7ois de Broglie, 2nd duc de Broglie( 19 October 171830 March 1804) was a French aristocrat and soldier and a marshal of France.", "He served with his father, Fran\u00e7ois- Marie, 1st duc de Broglie, at Parma and Guastalla, and in 1734 obtained a colonelcy.", "In the War of the Austrian Succession, he took part in the storming of Prague in 1742, and was made a brigadier.", "In 1744 and 1745 he saw further service on the Rhine, and he succeeded his father as 2nd duc de Broglie on the old duke's death in 1745.", "He was made a\" Mar\u00e9chal de Camp,\" and he subsequently served with Marshal de Saxe in the Low Countries, and was present at Roucoux, Val and Maastricht.", "At the end of the war, he was made a lieutenant- general.", "During the Seven Years' War, he served successively under Louis Charles C\u00e9sar Le Tellier, duc d'Estr\u00e9es, Charles de Rohan, prince de Soubise, and Contades, being present at all the battles from Hastenbeck onwards.", "His victory over Prince Ferdinand at Bergen( 1759) won him the rank of marshal of France from the French King Louis XV and the title of Prince of the Holy Roman Empire\" Reichsf\u00fcrst\" from Holy Roman Emperor Francis I. In 1759, he won the Battle of Bergen and followed that with the capture the city of Minden, later fighting at the Battle of Minden under the command of Contades, whom he would succeed in command.", "In 1760, he won an action at the Korbach, but was defeated at Villinghausen in 1761.", "After the war, he fell into disgrace and was not recalled to active employment until 1778, when he was given command of the troops designed to operate against Great Britain, when France intervened on the Thirteen Colonies' side during the American war of independence.", "He played a prominent part in the French Revolution, which he opposed with determination; he commanded troops at Versailles in July 1789 and briefly served as Louis XVI's minister of war before fleeing France.", "After his emigration, the duc de Broglie commanded the Army of the Princes for a short time( 1792).", "Since the duke's eldest son, Charles- Louis- Victor, prince de Broglie, died in the Terror, the succession fell to his grandson, who became the third duc de Broglie.", "He died at M\u00fcnster in 1804."]], ["Henri Am\u00e9d\u00e9e de Broglie", ["Henri Am\u00e9d\u00e9e de Broglie, Prince de Broglie( February 8, 1849- November 5, 1917)."]]]
supporting_facts: [["Victor-Fran\u00e7ois, 8th duc de Broglie", 1], ["Jean de Broglie", 0]]
evidences: [["Victor-Fran\u00e7ois Marie L\u00e9on, 8th duc de Broglie", "father", "Jean de Broglie"], ["Jean de Broglie", "date of death", "24 December 1976"]]
answer: 24 December 1976