In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

Example input: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lo during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
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Example output: During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen.
Example explanation: The passage describes the 704th's actions during Operation Market Garden.
Q: Question: How long had the Royal Navy been in existence for by the year Shilling became a chief master? Passage:Originally a petty officer in the Royal Navy, from this position he gradually raised himself to the higher ranks of the service, and on 30 May 1603 he became for life one of the six chief masters of the navy. In 1617 he obtained leave from the admiralty to take part in the fifth joint-stock voyage undertaken by the East India Company, and he sailed from Gravesend on 4 February as master of the Anne Royal, one of a squadron of five, under the command of Martin Pring. On 6 February Maurice Abbot, Deputy-governor of the EIC mustered the men, paid their wages and the fleet left the Downs on 5 March. They arrived at Saldanha Bay (now Table Bay) on 21 June. On the voyage the fleet captured a Portuguese vessel from Mozambique, the Don Pedro de Almeyda, laden with a cargo of 50 quintals of elephants' teeth. The ships arrived at Surat in September 1617 whereupon on the orders of Sir Thomas Roe, English ambassador to the Mughal Emperor Jahangir, Shilling departed Swally for the Red Sea. He arrived off Mocha on 13 April 1618 and was successful in obtaining a firman from the local ruler for the English to trade there and at Aden. He was subsequently placed in command of the Angel, a vessel formerly belonging to the Dutch East India Company, and in it he conveyed home Sir Thomas Roe. He arrived in England in the autumn of 1618. The EIC immediately obtained leave from the Duke of Buckingham to employ him on another voyage. On 25 March 1620 Shilling sailed from Tilbury on board the London as chief commander of a squadron of four vessels.

A:
Originally a petty officer in the Royal Navy, from this position he gradually raised himself to the higher ranks of the service, and on 30 May 1603 he became for life one of the six chief masters of the navy