In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.

Input: Consider Input: Passage: Britain's declaration of war against Nazi Germany in September 1939 included the Crown colonies and India but did not automatically commit the Dominions of Australia, Canada, New Zealand, Newfoundland and South Africa. All soon declared war on Germany, but Ireland chose to remain legally neutral throughout the war.After the Fall of France in June 1940, Britain and the empire stood alone against Germany, until the German invasion of Greece on 7 April 1941. British Prime Minister Winston Churchill successfully lobbied President Franklin D. Roosevelt for military aid from the United States, but Roosevelt was not yet ready to ask Congress to commit the country to war. In August 1941, Churchill and Roosevelt met and signed the Atlantic Charter, which included the statement that "the rights of all peoples to choose the form of government under which they live" should be respected. This wording was ambiguous as to whether it referred to European countries invaded by Germany and Italy, or the peoples colonised by European nations, and would later be interpreted differently by the British, Americans, and nationalist movements.In December 1941, Japan launched, in quick succession, attacks on British Malaya, the United States naval base at Pearl Harbor, and Hong Kong. Churchill's reaction to the entry of the United States into the war was that Britain was now assured of victory and the future of the empire was safe, but the manner in which British forces were rapidly defeated in the Far East irreversibly harmed Britain's standing and prestige as an imperial power. Most damaging of all was the Fall of Singapore, which had previously been hailed as an impregnable fortress and the eastern equivalent of Gibraltar. The realisation that Britain could not defend its entire empire pushed Australia and New Zealand, which now appeared threatened by Japanese forces, into closer ties with the United States. This resulted in the 1951 ANZUS Pact between Australia, New Zealand and the United States of America. 
Question: What location was the city that was seen as impregnable fortress considered to be the eastern equivalent of?

Output: Gibraltar.


Input: Consider Input: Passage: In 1933, Lewis Tater, an aspiring novelist who harbors dreams of becoming the next Zane Grey, decides to leave his family home in Iowa to go to the University of Titan in Nevada so he can soak up the western atmosphere. He arrives to find that there is no university, only a mail order correspondence course scam run by two crooks out of the local hotel. He tries to spend the night at the hotel, but is attacked by one of the men in an attempted robbery. He escapes his attacker, grabs his suitcase, and steals their car to get away, but after awhile   it runs out of gas. He looks in the car trunk, and finds a toolbox containing a revolver and ammunition. Afraid the two crooks are still in pursuit of him, he takes the tool box and his suitcase and walks off into the desert. 
Wandering and exhausted, the next morning he happens upon a threadbare film-unit from Tumbleweed Productions grinding out a "B" western. Later that day, he catches a lift with the cowboy actors to Los Angeles. After applying for work at Tumbleweed, he is referred by crusty old extra Howard Pike to the Rio, a western-themed restaurant. While washing dishes at the Rio, he is called by Tumbleweed, where Howard mentors him to be an actor. After proving himself as a stuntman, unit manager Kessler offers him a speaking role. Tater then falls in love with spunky script girl Miss Trout. Meanwhile, the crooks trace him to Los Angeles to retrieve the safe-box containing their money that was in the car stolen by Lewis. 
Question: What is the last name of the person who the crooks trace to Los Angeles?

Output: Tater.


Input: Consider Input: Passage: Little documentary evidence of the games remains; contemporary and near-contemporary writings mostly record the major details and concentrate on the opening days. The poet Martial gives the most complete and only truly contemporary account in the form of his De Spectaculis ("On the Spectacles"), a somewhat sycophantic series of epigrams detailing the individual events of the games as an illustration of Titus' power and benevolence. Much of the work is concerned with praising Titus, and there have been difficulties with authenticating, dating and translating various portions, but Martial does give details of events not covered by other sources and the only known surviving complete record of a gladiatorial combat in the arena.The historian Suetonius was born in about AD 70, and started writing around AD 100. He was a child at the time of the games, but it is possible that he was born and raised in Rome, so he may have witnessed the inaugural games first-hand. His De Vita Caesarum (Lives of the Caesars, known also as The Twelve Caesars or Lives of the Twelve Caesars) probably completed around AD 117 to 127, includes some detail on the opening days of the games. Later in his history of Titus he reveals further information about the games. Suetonius' histories of the early Caesars have been criticised for being based on rumour and gossip rather than accurate historical sources, and he often reports from sources which contradict each other without attempting to analyse their quality or accuracy. However, he is generally regarded as a thorough scholar and has been praised for his balanced treatment of his subjects.The only other major source of information on the games is Cassius Dio who lived in the latter second and early third centuries. His History of Rome spans 80 books written in 22 years, but much of which are only fragments. He is noted for his attention to detail in administrative affairs, but for major events his writing can be merely impressionistic, with a greater emphasis put on his interpretation of the events' significance within the wider historical context rather than reporting details. His sources are varied: he relies on many of the major commentators but also seems to have paid close attention to public records. His account of the Titus games is not sourced. 
Question: What is the full name of the person whose account of the Titus games is not sourced?


Output: Cassius Dio.


