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.

Ex Input:
Passage: New York City bouncer Frank "Tony Lip" Vallelonga is searching for new employment while the Copacabana nightclub, where he works, is closed for renovations. He is invited to an interview with Doctor Don Shirley, an eccentric African American pianist who is looking for a driver for his eight-week concert tour through the Midwest and Deep South. Don hires Tony on the strength of his references. They embark with plans to return to New York on Christmas Eve. Don's record label gives Tony a copy of the Green Book, a guide for African-American travelers to find motels, restaurants, and filling stations that would serve them.They begin the tour in the Midwest before eventually heading farther south. Tony and Don initially clash as Don is disgusted by Tony's habits while Tony feels uncomfortable being asked to act with more refinement. As the tour progresses, Tony is impressed with Don's talent on the piano, and increasingly appalled by the discriminatory treatment that Don receives from his hosts and the general public when he is not on stage. A group of white men threatens Don's life in a bar and Tony rescues him. He instructs Don not to go out without him for the rest of the tour.
Question: What is the last name of the person who Tony rescues?

Ex Output:
Shirley.

Ex 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?

Ex Output:
Gibraltar.

Ex Input:
Passage: In the Hundred Acre Wood, Tigger searches for someone to bounce with him, but all of his friends are too busy getting ready for the upcoming winter. While he searches for a playmate, Tigger inadvertently destroys Eeyore's house with a boulder. He later damages the complex pulley system that Rabbit has rigged up to remove the boulder, much to the latter's frustration. The rest of Tigger's friends say that they are not quite as bouncy as he is because they are not Tiggers like him. Tigger sadly wanders off in loneliness, wishing there was somebody else like him.
Wanting to play with Tigger, Roo asks if Tigger has a Tigger family he could bounce with. Tigger is fascinated by the idea, and the two go to visit Owl for advice on finding Tigger's family. Owl shows them portraits of his own family and mentions the concept of family trees; Tigger accidentally knocks the portraits over. When he quickly hangs them back up, all of Owl's ancestors appear to be perched on a single tree. Tigger concludes that his family tree must be a real tree, and he and Roo go searching for it.
After searching the wood without turning up any giant, Tigger-striped trees, Tigger and Roo go back to Tigger's house to search for clues to his family's whereabouts. Tigger teaches Roo the awesome Whoop-de-Dooper-Loop-de-Looper-Alley-Ooper Bounce. They find a heart-shaped locket that Tigger hopes will contain a picture of his family, but it is empty. Roo suggests Tigger try writing a letter to his family, which Tigger does.
Question: What are the names of the characters who ask Owl for advice on finding Tigger's family?

Ex Output:
Tigger.