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.

Example Input: Passage: After further work as a répétiteur at the opera in Budapest, and with his standing enhanced by his association with Toscanini, Solti was given his first chance to conduct, on 11 March 1938. The opera was The Marriage of Figaro. During that evening, news came of the German invasion of Austria. Many Hungarians feared that Hitler would next invade Hungary; he did not do so, but Horthy, to strengthen his partnership with the Nazis, instituted anti-semitic laws, mirroring the Nuremberg Laws, restricting Hungary's Jews from engaging in professions. Solti's family urged him to move away. He went first to London, where he made his Covent Garden debut, conducting the London Philharmonic for a Russian ballet season. The reviewer in The Times was not impressed with Solti's efforts, finding them "too violent, for he lashed at the orchestra and flogged the music so that he endangered the delicate, evocative atmosphere." At about this time Solti dropped the name "György" in favour of "Georg".After his appearances in London Solti went to Switzerland to seek out Toscanini, who was conducting in Lucerne. Solti hoped that Toscanini would help find him a post in the US. He was unable to do so, but Solti found work and security in Switzerland as vocal coach to the tenor Max Hirzel, who was learning the role of Tristan in Wagner's opera. Throughout the Second World War, Solti remained in Switzerland. He did not see his father again: Mor Stern died of diabetes in a Budapest hospital in 1943. Solti was reunited with his mother and sister after the war. In Switzerland he could not obtain a work permit as a conductor, but earned his living as a piano teacher. After he won the 1942 Geneva International Piano Competition he was permitted to give piano recitals, but was still not allowed to conduct. During his exile, he met Hedwig (Hedi) Oeschli, daughter of a lecturer at Zürich University. They married in 1946. In his memoirs he wrote of her, "She was very elegant and sophisticated. ... Hedi gave me a little grace and taught me good manners – although she never completely succeeded in this. She also helped me enormously in my career". 
Question: What disease killed the father of the man who debuted with Covent Garden in London?
Example Output: diabetes.

Example Input: Passage: From the colonizers' perspective, Carabane's position at the mouth of the river was an undeniable asset. In the 20th and 21st centuries, in terms of trade and tourism issues, this location is more of a disadvantage because it effectively separates the island from the rest of the country.
While a direct route by sea has not been available since the sinking of the Joola, the traveller from Dakar may use various other means of transportation in order to arrive in Basse Casamance. Some national roads connect to Ziguinchor, down the N1 to Kaolack. The N4 and N5 roads cross the Gambia (both the country and the river), the former running through Nioro du Rip to Farafenni, and the latter crossing the river to Banjul. The two roads merge in Bignona before descending to Ziguinchor. However, traffic is forbidden on both roads between 7 p.m. and 10 a.m., and the routes are subject to frequent accidents and constant demining operations. Alternatively, it is possible to travel by plane to the airport in Ziguinchor or Cap Skirring, or to travel by boat to one of these locations. Reaching Carabane from either town is relatively straightforward.By boat, the distance between Dakar and Carabane is 265 kilometres (143 nmi), although Ziguinchor is only 48 kilometres (30 mi) away. Before the launch of the Joola, other boats, mostly well-worn ones, made the connection: first Cap Skirring, then the Casamance Express, and then Island Karabane. In January 1991, a brand new ferry went into operation. Like its predecessors, it connected Dakar to Ziguinchor, stopping near Carabane where canoes could reach the island. On September 26, 2002, 180 extra passengers boarded the already overloaded ship at this stop, and a few hours later, the Joola sank. For security reasons, the Joola's successor, the Wilis, stopped calling at Carabane, to the great displeasure of the inhabitants. Tourists became rare after that, and from time to time, inhabitants of the island found it necessary to move to Dakar or Ziguinchor. Significant modifications to the MV Aline Sitoe Diatta, which replaced the Wilis in March 2008, were considered to allow it to stop safely at the island, and the construction of a berth was announced. Souleymane Ndéné Ndiaye, who later became Prime Minister of Senegal, laid the first stone of the berth in July 2008, and the entire construction project was financed by the Senegalese government at an estimated cost of 12 billion West African CFA francs. On April 26, 2014, the MV Aline Sitoe Diatta stopped at the Carabane berth for the first time, improving transportation for locals and tourists. As of 2015, the ferry stops at Carabane four times each week in the middle of its trips between Dakar and Ziguinchor. 
Question: What is the exact name of the specific road that crosses the river to Banjul?
Example Output: N5.

Example Input: Passage: Sir Richard Starkey  (born 7 July 1940), known professionally as Ringo Starr, is an English musician, singer, songwriter and actor who gained worldwide fame as the drummer for the Beatles. He occasionally sang lead vocals with the group, usually for one song on each album, including "With a Little Help from My Friends", "Yellow Submarine", "Good Night", and their cover of "Act Naturally". He also wrote and sang the Beatles' songs "Don't Pass Me By" and "Octopus's Garden", and is credited as a co-writer of others, including "What Goes On" and "Flying".
Starr was afflicted by life-threatening illnesses during childhood, and he fell behind in school as a result of prolonged hospitalisations. He briefly held a position with British Rail before securing an apprenticeship at a Liverpool equipment manufacturer. Soon afterwards, he became interested in the UK skiffle craze and developed a fervent admiration for the genre. In 1957, he co-founded his first band, the Eddie Clayton Skiffle Group, which earned several prestigious local bookings before the fad succumbed to American rock and roll by early 1958. When the Beatles formed in 1960, Starr was a member of another Liverpool group, Rory Storm and the Hurricanes. After achieving moderate success in the UK and Hamburg, he quit the Hurricanes and joined the Beatles in August 1962, replacing Pete Best.
Starr played key roles in the Beatles' films and appeared in numerous others. After the band's break-up in 1970, he released several successful singles including the US number-four hit "It Don't Come Easy", and number ones "Photograph" and "You're Sixteen". In 1972, he released his most successful UK single, "Back Off Boogaloo", which peaked at number two. He achieved commercial and critical success with his 1973 album Ringo, which was a top-ten release in both the UK and the US. He has featured in a number of documentaries and hosted television shows.  He also narrated the first two series of the children's television programme Thomas & Friends and portrayed "Mr Conductor" during the first season of the PBS children's television series Shining Time Station. Since 1989, he has toured with thirteen variations of Ringo Starr & His All-Starr Band.
Starr's musicianship has received praise from other drummers, including Phil Collins and Journey's Steve Smith. He was inducted into the Modern Drummer Hall of Fame in 1998. In 2011, Rolling Stone readers named Starr the fifth-greatest drummer of all time. Starr, who was previously inducted into the Rock and Roll Hall of Fame as a Beatle in 1988, was inducted for his solo career in 2015, making him one of 21 performers inducted more than once. He is the richest drummer in the world with a net worth of US$350 million. He was appointed a Knight Bachelor in the 2018 New Year Honours for services to music. 
Question: What is the full professional name of the person who occasionally sang lead vocals in the Beatles?
Example Output:
Ringo Starr.