Given the task definition, example input & output, solve the new input case.
In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Example: Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin? Passage 1: 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-Lô 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,
. Passage 2: John Ford (1894–1973) was an American film director whose career spanned from 1913 to 1971. During this time he directed more than 140 films. Born in Maine, Ford entered the filmmaking industry shortly after graduating from high school with the help of his older brother, Francis Ford, who had established himself as a leading man and director for Universal Studios. After working as an actor, assistant director, stuntman, and prop man – often for his brother – Universal gave Ford the opportunity to direct in 1917. Initially working in short films, he quickly moved into features, largely with Harry Carey as his star. In 1920 Ford left Universal and began working for the Fox Film Corporation. During the next ten years he directed more than 30 films, including the westerns The Iron Horse (1924) and 3 Bad Men (1926), both starring George O'Brien, the war drama Four Sons and the Irish romantic drama Hangman's House (both 1928 and both starring Victor McLaglen). In the same year of these last two films, Ford directed his first all-talking film, the short Napoleon's Barber. The following year he directed his first all-talking feature, The Black Watch.
. Passage 3: Since the late 1970s, the central part of NYU is its Washington Square campus in the heart of Greenwich Village. Despite being public property, and expanding the Fifth Avenue axis into Washington Square Park, the Washington Square Arch is the unofficial symbol of NYU. Until 2008, NYU's commencement ceremony was held in Washington Square Park. However, due to space constraints, ceremonies are now held at the Yankee Stadium. Important facilities at Washington Square are the Elmer Holmes Bobst Library, designed by Philip Johnson and Richard Foster, who also designed several other structures, such as Tisch Hall, Meyer Hall, and the Hagop Kevorkian Center. When designing these buildings Johnson and Foster also set up a master plan for a complete redesign of the NYU Washington Square campus. However, it was never implemented. Other historic buildings include the Silver Center (formerly known as "Main building"); the Brown Building of Science; Judson Hall, which houses the King Juan Carlos I of Spain Center; Vanderbilt Hall, the historic townhouse row on Washington Square North; The Grey Art Gallery at 100 Washington Square East, housing the New York University art collection and featuring museum quality exhibitions; the Kaufman Management Center; and the Torch Club – the NYU dining and club facility for alumni, faculty, and administrators. Just a block south of Washington Square is NYU's Washington Square Village, housing graduate students and junior and senior faculty residences in the Silver Towers, designed by I. M. Pei, where an enlargement of Picasso's sculpture Bust of Sylvette (1934) is displayed.
.
Output: 1
The question refers to the 704th unit and task about war which is decribed by Passage 1.

New input case for you: Question: When was the brother of Charles Brenton born? Passage 1:Duchenne muscular dystrophy (DMD) is caused when a mutation in the dystrophin gene changes the RNA so that it no longer codes for functional dystrophin protein. This usually happens due to a mutation that alters the reading frame of the RNA downstream of the mutation, so-called frameshift mutation. If an exon with an appropriate number of bases lies near the mutation, removing that exon can correct the downstream reading frame, restoring the production of partially functional dystrophin. This is the general strategy used in the design of exon-skipping oligonucleotides for DMD. As there are 79 exons in the longest splice form of the dystrophin transcript, many different oligonucleotides are needed to address the range of mutations present in the population of people with DMD.
 Passage 2:Born in Fryeburg, Oxford County, Maine, Benton was the son of Dr. Joseph and Catherine Benton and the brother of Nathaniel S. Benton. He pursued preparatory studies before moving to Herkimer County, New York in 1824 to live with an elder brother. Later, he attended Lowville Academy at Lowville, New York. Benton also learned the tanner’s trade, but left the trade and became the editor of the Mohawk Courier and the Little Falls Gazette from 1830 to 1832. During that time he also studied law and was admitted to the bar in 1835 and commenced practice at Little Falls, New York. He married Emeline Fuller in 1840 and they had one son, Linn Boyd Benton (named for his colleague Linn Boyd), who became an inventor and engineer, and co-founded the printing company American Type Founders. Linn Benton's son (and Charles's grandson), Morris Fuller Benton, would become one of the most prolific American type designers of his era through his work for ATF. He married again in 1853 to Elizabeth B. Reynolds and they also had one son, Charles R. Benton.
 Passage 3:In February 2009, the band toured Europe; a number of the U.K. dates were part of a package tour sponsored by Metal Hammer dubbed "Defenders of the Faith" featuring Dimmu Borgir as co-headliners. The group then toured Australia through March as part of the Soundwave Festival, which was headlined by Nine Inch Nails and Alice in Chains. In April 2009, the group began a headlining North American tour, sponsored by No Fear Energy. The leg began in Phoenix, Arizona and wrapped up mid-May in North Myrtle Beach, South Carolina. In July 2009, during a European summer tour, guitarist Mark Morton exited the tour prior to the final six dates as he and his wife were expecting their first child. Morton was replaced by Buz McGrath of Unearth for the remaining summer dates, and Doc Coyle of God Forbid for.the first three weeks of a fall North American leg. Morton eventually rejoined the group in October in Tampa, Florida.

Output:
2