You will be given a definition of a task first, then some input of the task.
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.

Question: How many flights does the airport in Halifax have each day? Passage 1:The city is overlooked by a large museum and national historic site, the Halifax Citadel not far from the province's Natural History Museum. The Maritime Museum of the Atlantic, the oldest and largest maritime museum in Canada explores the cultural and technology of the province's seafaring heritage. Moored beside the Maritime Museum is the museum ship HMCS Sackville, Canada's naval memorial. The city's rich naval history is also presented at the Maritime Command Museum in the city's North End. The Pier 21 Immigration Museum located a former ocean liner immigration shed features Canada's immigration history. Across the harbour, the Dartmouth Heritage Museum preserves the history of the Dartmouth side of the Harbour. The Black Cultural Centre for Nova Scotia in Cherrybrook celebrates the history and culture of African Nova Scotians. A variety of community museums across the municipality showcase community history such as the Fultz House Museum in Sackville and the Musquodoboit Railway Museum in Musquodoboit Harbour. Two aviation museums are located in Halifax; the Atlantic Aviation Museum near the Halifax International Airport and the Shearwater Aviation Museum in Eastern Passage.
 Passage 2:Leigh Lisker (December 7, 1918 – March 24, 2006) was an eminent American linguist and phonetician. Most of his career was spent at the University of Pennsylvania, where he was a professor and then emeritus professor of linguistics. Dr. Lisker received his A.B. in 1941, with a major in German, his M.A. in 1946, and a Ph.D. in 1949 in linguistics. He was a major figure in phonetics, working both at the University of Pennsylvania and at Haskins Laboratories in New Haven, CT, where he was a senior scientist from 1951 until the end of his life. He collaborated with several phoneticians, principally Arthur S. Abramson. He is best known for his work, done mostly in conjunction with Abramson, on voice onset time. Dr. Lisker also made important contributions to Dravidian linguistics, including the book Introduction to Spoken Telugu (Telugu), and did research comparing phonetic and phonological perceptions on the part of linguistically naive and linguistically sophisticated speakers of different native language backgrounds. He conducted such studies in collaboration with Dr. Abramson of the University of Connecticut, Bh. Krishnamurti  of University of Hyderabad, India, Adrian Fourcin  of University College London, and Mario Rossi  of the Institut de Phonétique at the Université de Provence, Aix-en-Provence.
 Passage 3:A pro runner from Wollongong, Hanigan was selected to represent Southern New South Wales against the touring Great Britain team in 1966, scoring a try. He signed on to play in Sydney's NSWRFL competition with the Manly-Warringah club in 1967. That year he set a new club record for most tries in a match when he scored five tries in a match against competition newcomers, Cronulla-Sutherland. After playing for New South Wales, he scored two tries in Australia's First Test win over New Zealand. By the end of the 1967 NSWRFL season he had scored sixteen tries, the most in the competition, before being selected to tour with the 1967-68 Kangaroos. Hanigan played in 11 games on tour but no Tests. With Manly-Warringah he reached the 1968 NSWRFL season's grand final and played on the wing in the loss to Souths.

Output:
1