Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Question: How long had the Royal Air Force been around when he joined? Passage 1:Allison co-founded D Magazine -- a monthly magazine covering Dallas -- in 1974, with backing from Dallas investor Ray Lee Hunt. In 1981, he and a group of investors purchased Sport Magazine, which they sold in 1984. He went on to found and publish Art & Antiques in 1984. In 1985, Allison was asked by William F. Buckley, Jr. to join the board of directors of the National Review, and in 1980 he became its publisher, succeeding William A. Rusher. In 1981 or 1982 Allison sold his company Allison Publications, publisher of Art & Antiques. In 1993, he resigned as publisher of National Review. In 1995, he and investor Harlan Crow repurchased D Magazine, and in 2001, Allison bought out Crow to become the magazine company's sole owner. In 1993, Allison edited a new edition of The Bible To Be Read As Living Literature, published by Simon & Schuster. He is also the author of Is That In The Bible? (Dell, 1992) and Condemned To Repeat It: History Lessons For Leaders (Viking Penguin, 1998).
Passage 2:Pocock joined the Royal Air Force in 1974. He served as Officer Commanding Support Wing at the joint RAF and Army base at Akrotiri before becoming briefing officer to the Chief of the Air Staff. He went on to be Group Captain in charge of the RAF estate in 1996, Air Commodore Plans at RAF Logistics Command in 1997 and Air Commodore Plans and Policy at RAF Personnel and Training Command in 1999. He became Officer responsible for Defence Pay & Allowances in 2000, Head of the Service Personnel Change Programme with promotion to air vice-marshal in January 2003 before serving as Defence Services Secretary and Assistant Chief of Defence Staff (Personnel and Reserves) from 2004 to 2005. He was promoted to air marshal in July 2005 and became Deputy Chief of the Defence Staff (Personnel) and retired in 2007. He was appointed Companion of the Order of the Bath (CB) in the 2008 New Year Honours.
Passage 3:Torchia holds the distinction of having been the only man who has served as a player, coach and manager of the Pawtucket Red Sox. After he retired as a player in 1974, he coached for the "PawSox" in 1975 (under skipper Joe Morgan). He then managed Boston farm clubs from 1976 to 1984, ranging from Class A to Triple A. His first team, the Winston-Salem Red Sox, won the 1976 Carolina League pennant. He skippered the Bristol Red Sox of the Double-A Eastern League for five seasons (197882), winning league titles in 1978 and 1981. Torchia returned to Pawtucket as the third manager in the club's Triple-A history in 1983. He spent two seasons there, winning the 1984 Governors' Cup, emblematic of the championship of the International League.

Student:
2