input: Ewbank moved back to Oxford in retirement and wrote a book in 1977 called Football Greats. He was inducted into the Pro Football Hall of Fame in 1978, but said later that year that he was glad to be out of coaching. With the expansion of the NFL, he said, talent had become diluted and fielding a good team was difficult. Coaches, meanwhile, customarily took the blame for a team's failures, and the sport had become too violent.  Ewbank's coaching style was laid-back but efficient, combining his mild personality with an orderliness inherited from Paul Brown. "Weeb combined a low-key style with a flair for the most dramatic of accomplishments", former NFL commissioner Paul Tagliabue said in 1998. "He led two of the legendary teams during the era of pro football's greatest growth. But he preferred to stay in the background and let the players take the credit." He favored well-practiced execution of a limited number of plays over complicated offensive and defensive systems. Paul Brown "had the exact same approach: Don't do too much, but what you do, execute it flawlessly", Raymond Berry said in 2013, adding that the Colts' 1958 championship team had only six passing plays.  Ewbank is the only man to coach two professional football teams to championships, and the only man to win the NFL championship, the AFL championship and a Super Bowl. Ewbank's regular-season career record in the NFL and AFL was 130-129-7, and his playoff record was 4-1. Ewbank was selected as the head coach on the AFL All-Time Team in 1970. In addition to the Pro Football Hall of Fame, he was inducted into the Miami University Athletic Hall of Fame in 1969, the Indiana Football Hall of Fame in 1974 and the Talawanda School District Athletic Hall of Fame in 1999. He also won the Walter Camp Distinguished American Award in 1987 and was inducted into the Jets' Ring of Honor in 2010.  Ewbank suffered a dislocated hip in the aftermath of the Jets' 1968 AFL championship game win, and had other health issues in his later years. He broke his leg and had two hip replacements in the 1990s. He also had myasthenia in his right eye. Ewbank died at 91 on November 17, 1998, the 30th anniversary of the "Heidi Game", after suffering from heart problems. He and his wife Lucy had three daughters.

Answer this question "What were some other accomplishments in his later years?"
output: He also won the Walter Camp Distinguished American Award in 1987 and was inducted into the Jets' Ring of Honor in 2010.

Question: Gilbert and Sullivan refers to the Victorian-era theatrical partnership of the dramatist W. S. Gilbert (1836-1911) and the composer Arthur Sullivan (1842-1900) and to the works they jointly created. The two men collaborated on fourteen comic operas between 1871 and 1896, of which H.M.S. Pinafore, The Pirates of Penzance and The Mikado are among the best known. Gilbert, who wrote the libretti for these operas, created fanciful "topsy-turvy" worlds where each absurdity is taken to its logical conclusion--fairies rub elbows with British lords, flirting is a capital offence, gondoliers ascend to the monarchy, and pirates emerge as noblemen who have gone astray. Sullivan, six years Gilbert's junior, composed the music, contributing memorable melodies that could convey both humour and pathos.

Gilbert was born in London on 18 November 1836. His father, William, was a naval surgeon who later wrote novels and short stories, some of which included illustrations by his son. In 1861, to supplement his income, the younger Gilbert began writing illustrated stories, poems and articles of his own, many of which would later be mined as inspiration for his plays and operas, particularly Gilbert's series of illustrated poems, the Bab Ballads.  In the Bab Ballads and his early plays, Gilbert developed a unique "topsy-turvy" style in which humour was derived by setting up a ridiculous premise and working out its logical consequences, however absurd. Director and playwright Mike Leigh described the "Gilbertian" style as follows:  With great fluidity and freedom, [Gilbert] continually challenges our natural expectations. First, within the framework of the story, he makes bizarre things happen, and turns the world on its head. Thus the Learned Judge marries the Plaintiff, the soldiers metamorphose into aesthetes, and so on, and nearly every opera is resolved by a deft moving of the goalposts... His genius is to fuse opposites with an imperceptible sleight of hand, to blend the surreal with the real, and the caricature with the natural. In other words, to tell a perfectly outrageous story in a completely deadpan way.  Gilbert developed his innovative theories on the art of stage direction, following theatrical reformer Tom Robertson. At the time Gilbert began writing, theatre in Britain was in disrepute. Gilbert helped to reform and elevate the respectability of the theatre, especially beginning with his six short family-friendly comic operas, or "entertainments", for Thomas German Reed.  At a rehearsal for one of these entertainments, Ages Ago, in 1870, the composer Frederic Clay introduced Gilbert to his friend, the young composer Arthur Sullivan. Over the next year, before the two first collaborated, Gilbert continued to write humorous verse, stories and plays, including the comic operas Our Island Home (1870) and A Sensation Novel (1871), and the blank verse comedies The Princess (1870), The Palace of Truth (1870) and Pygmalion and Galatea (1871).

Using a quote from the above article, answer the following question: When was Gilbert born?
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Answer:
18 November 1836.