Question: Who became the first Emperor of the empire centered on the city where Lucrezia Borgia's father died?

full_context: Document 1: Roman Republic: However, civil war flared again when the Second Triumvirate of Octavian, Lepidus and Mark Antony failed. The ambitious Octavian built a power base of patronage and then launched a campaign against Mark Antony. At the naval Battle of Actium off the coast of Greece, Octavian decisively defeated Antony and Cleopatra. Octavian was granted a series of special powers including sole "imperium" within the city of Rome, permanent consular powers and credit for every Roman military victory, since all future generals were assumed to be acting under his command. In 27 BC Octavian was granted the use of the names "Augustus" and "Princeps", indicating his primary status above all other Romans, and he adopted the title "Imperator Caesar" making him the first Roman Emperor.
Document 2: Anna d'Este: Anna d'Este was born on 16 November 1531, the eldest daughter of the Duke of Ferrara Ercole II (son of Lucrezia Borgia and grandson of Pope Alexander VI) and his wife, Renée of France (daughter of King Louis XII of France). She grew up in Ferrara, where she received an excellent education. The future writer and scholar Olympia Fulvia Morata was chosen as one of her companions at court.
Document 3: Roman Republic: The extensive campaigning abroad by Roman generals, and the rewarding of soldiers with plunder on these campaigns, led to a general trend of soldiers becoming increasingly loyal to their generals rather than to the state. Rome was also plagued by several slave uprisings during this period, in part because vast tracts of land had been given over to slave farming in which the slaves greatly outnumbered their Roman masters. In the 1st century BC at least twelve civil wars and rebellions occurred. This pattern continued until 27 BC, when Octavian (later Augustus) successfully challenged the Senate's authority, and was made princeps (first citizen).
Document 4: Sancha of Aragon: Sancha of Aragon (1478 in Gaeta – 1506 in Naples), or Sancia of Aragon, was an illegitimate daughter of King Alfonso II of Naples and his mistress Trogia Gazzela. In 1494, she was married to Gioffre Borgia, youngest son of Pope Alexander VI. Upon her marriage, she and her husband were created Prince and Princess of Squillace, a province in the south of Italy. For the majority of their marriage, Sancha and her husband lived in the Vatican with the rest of his family. There Sancha became friends with her sister-in-law Lucrezia, and allegedly had affairs with both of her husband's older brothers: Juan Borgia, 2nd Duke of Gandia, also known as Giovanni Borgia, and Cesare Borgia. Her affair with Juan is sometimes said to be the reason for Cesare's alleged murder of Juan in 1497.
Document 5: Roman Republic: After the assassination, Mark Antony formed an alliance with Caesar's adopted son and great-nephew, Gaius Octavian. Along with Marcus Lepidus, they formed an alliance known as the Second Triumvirate. They held powers that were nearly identical to the powers that Caesar had held under his constitution. As such, the Senate and assemblies remained powerless, even after Caesar had been assassinated. The conspirators were then defeated at the Battle of Philippi in 42 BC. Eventually, however, Antony and Octavian fought against each other in one last battle. Antony was defeated in the naval Battle of Actium in 31 BC, and he committed suicide with his lover, Cleopatra. In 29 BC, Octavian returned to Rome as the unchallenged master of the Empire and later accepted the title of Augustus ("Exalted One"). He was convinced that only a single strong ruler could restore order in Rome.
Document 6: Roman Empire: The Roman Empire (Latin: Imperium Rōmānum, Classical Latin: (ɪmˈpɛ. ri. ũː roːˈmaː. nũː); Koine and Medieval Greek: Βασιλεία τῶν Ῥωμαίων, tr. Basileia tōn Rhōmaiōn) was the post-Roman Republic period of the ancient Roman civilization, with a government headed by emperors and large territorial holdings around the Mediterranean Sea in Europe, Africa and Asia. The city of Rome was the largest city in the world c. 100 BC -- c. AD 400, with Constantinople (New Rome) becoming the largest around AD 500, and the Empire's population grew to an estimated 50 to 90 million inhabitants (roughly 20% of the world's population at the time). The 500 - year - old republic which preceded it had been severely destabilized in a series of civil wars and political conflict, during which Julius Caesar was appointed as perpetual dictator and then assassinated in 44 BC. Civil wars and executions continued, culminating in the victory of Octavian, Caesar's adopted son, over Mark Antony and Cleopatra at the Battle of Actium in 31 BC and the annexation of Egypt. Octavian's power was then unassailable and in 27 BC the Roman Senate formally granted him overarching power and the new title Augustus, effectively marking the end of the Roman Republic.
Document 7: Gioffre Borgia: Gioffre Borgia (born 1481 or 1482; died 1516 or 1517), also known as Goffredo (Italian), or Jofré Borja (Catalan), was the youngest son of Pope Alexander VI and Vannozza dei Cattanei, and a member of the House of Borgia. He was the youngest brother of Cesare, Giovanni, and Lucrezia Borgia.
Document 8: Roman Republic: Caesar was now the primary figure of the Roman state, enforcing and entrenching his powers. His enemies feared that he had ambitions to become an autocratic ruler. Arguing that the Roman Republic was in danger, a group of senators hatched a conspiracy and assassinated Caesar at a meeting of the Senate in March 44 BC.  Mark Antony, Caesar's lieutenant, condemned Caesar's assassination, and war broke out between the two factions. Antony was denounced as a public enemy, and Caesar's adopted son and chosen heir, Gaius Octavianus, was entrusted with the command of the war against him. At the Battle of Mutina Mark Antony was defeated by the consuls Hirtius and Pansa, who were both killed.
Document 9: Franceschetto Cybo: Despite his exceeding passion for card playing, he received from his father important positions in the Papal States: governor of Rome (1488), the fiefs of Cerveteri and Anguillara (1490) and the title of Count of the Lateran Palace. In 1490 he attempted to steal the Papal treasure.
Document 10: Palermo: After the Treaty of Utrecht (1713), Sicily was handed over to the Savoia, but by 1734 it was again a Bourbon possession. Charles III chose Palermo for his coronation as King of Sicily. Charles had new houses built for the growing population, while trade and industry grew as well. However, by now Palermo was now just another provincial city as the Royal Court resided in Naples. Charles' son Ferdinand, though disliked by the population, took refuge in Palermo after the French Revolution in 1798. His son Alberto died on the way to Palermo and is buried in the city. When the Kingdom of the Two Sicilies was founded, the original capital city was Palermo (1816) but a year later moved to Naples.
Document 11: Napoleon: Unhappy with this change of policy by the Portuguese government, Napoleon sent an army to invade Portugal. On 17 October 1807, 24,000 French troops under General Junot crossed the Pyrenees with Spanish cooperation and headed towards Portugal to enforce Napoleon's orders. This attack was the first step in what would eventually become the Peninsular War, a six-year struggle that significantly sapped French strength. Throughout the winter of 1808, French agents became increasingly involved in Spanish internal affairs, attempting to incite discord between members of the Spanish royal family. On 16 February 1808, secret French machinations finally materialized when Napoleon announced that he would intervene to mediate between the rival political factions in the country. Marshal Murat led 120,000 troops into Spain and the French arrived in Madrid on 24 March, where wild riots against the occupation erupted just a few weeks later. Napoleon appointed his brother, Joseph Bonaparte, as the new King of Spain in the summer of 1808. The appointment enraged a heavily religious and conservative Spanish population. Resistance to French aggression soon spread throughout the country. The shocking French defeat at the Battle of Bailén in July gave hope to Napoleon's enemies and partly persuaded the French emperor to intervene in person.
Document 12: Vittoria Colonna: Colonna was born at Marino in 1490, a fief of the Colonna family in the Alban Hills near Rome. She was the daughter of Fabrizio Colonna, grand constable of the kingdom of Naples, and of Agnese da Montefeltro, daughter of the Duke of Urbino. She was engaged in 1495 at the age of 3 years old to "Ferrante" Fernando Francesco d'Ávalos, son of the marquese di Pescara, at the insistence of Ferdinand, King of Naples.
Document 13: Pope Alexander VI: On 25 January 1494, Ferdinand I died and was succeeded by his son Alfonso II (1494–1495). Charles VIII of France now advanced formal claims on the Kingdom of Naples. Alexander authorised him to pass through Rome, ostensibly on a crusade against the Ottoman Empire, without mentioning Naples. But when the French invasion became a reality Pope Alexander VI became alarmed, recognised Alfonso II as king of Naples, and concluded an alliance with him in exchange for various fiefs for his sons (July 1494). A military response to the French threat was set in motion: a Neapolitan army was to advance through the Romagna and attack Milan, while the fleet was to seize Genoa. Both expeditions were badly conducted and failed, and on 8 September Charles VIII crossed the Alps and joined Ludovico il Moro at Milan. The Papal States were in turmoil, and the powerful Colonna faction seized Ostia in the name of France. Charles VIII rapidly advanced southward, and after a short stay in Florence, set out for Rome (November 1494).
Document 14: Late Middle Ages: Avignon was the seat of the papacy from 1309 to 1376. With the return of the Pope to Rome in 1378, the Papal State developed into a major secular power, culminating in the morally corrupt papacy of Alexander VI. Florence grew to prominence amongst the Italian city-states through financial business, and the dominant Medici family became important promoters of the Renaissance through their patronage of the arts. Other city states in northern Italy also expanded their territories and consolidated their power, primarily Milan and Venice. The War of the Sicilian Vespers had by the early 14th century divided southern Italy into an Aragon Kingdom of Sicily and an Anjou Kingdom of Naples. In 1442, the two kingdoms were effectively united under Aragonese control.
Document 15: Lucrezia Borgia: Lucrezia Borgia (; ; 18 April 1480 – 24 June 1519) was a Spanish-Italian noblewoman of the House of Borgia who was the daughter of Pope Alexander VI and Vannozza dei Cattanei. She reigned as the Governor of Spoleto, a position usually held by cardinals, in her own right.
ground_truth: Octavian
sub_queries: Who is Lucrezia Borgia's father? Answer: Alexander VI
What city did Pope Alexander VI live when he died? Answer: Rome
Who has been designated as the first Emperor of Rome ? Answer: Octavian