Definition: 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.
Input: Question: Who is currently holding the position of Commander of the Royal Canadian Air Force? Passage 1:John Cranch (17511821), painter, born at Kingsbridge, Devonshire, 12 Oct. 1751, taught himself as a boy drawing, writing, and music, and while a clerk at Axminster also received instruction from a Roman Catholic priest. Inheriting some money, he came to London and painted portraits and historical pictures. He failed, however, to get a place on the walls of the Royal Academy, but was more successful at the Society of Artists, to which he contributed Burning of the Albion Mills, and at the British Institution, to which he contributed eight pictures in 1808. His best picture was The Death of Chatterton, now in the possession of Sir James Winter Lake, bart., who also owns a portrait of Cranch, which was engraved by John Thomas Smith. He is said to have excelled in "poker-pictures", and to have been befriended by Sir Joshua Reynolds. Reynolds in his youth had received valuable assistance from a Mr. and Mrs. Cranch of Plympton, Devonshire, who were doubtless relatives of John Cranch. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1797 and a member of the American Antiquarian Society in 1818. After residing many years at Bath, Cranch died there in his seventieth year in February 1821. He published two worksOn the Economy of Testaments (1794), and Inducements to promote the Fine Arts of Great Britain by exciting Native Genius to independent Effort and original Design (1811). There is a picture by him in the South Kensington Museum.
Passage 2:Leaving Collurian he worked as a porter at Penzance railway station for the Great Western Railway and with the free pass, that was part of his entitlement, he travelled to London to search for a post as a journalist. He landed his first job with The Dairy Farmer and later Farmers Weekly. He travelled to the West Indies in 1939 and Canada where he joined the Canadian Army at the outbreak of World War II, but was invalided out in 1941. Back in Britain, he started as a sub-editor on the Daily Express, and later as a personal assistant to Manny Shinwell, a Labour MP, writing speeches for members of the party. In 1949 he became political columnist for the Daily Mirror, and unsuccessfully standing as a Labour party candidate for Bristol West in 1950 and 1951.
Passage 3:Blondin joined the Canadian Forces in 1980 and completed his flight training in 1982. He was assigned to fly Lockheed T-33 jet trainers for his first operational tour. In 1986, he underwent fighter pilot training on the CF-5 and CF-18, and became part of the first group of pilots flying the CF-18 with 433 Squadron in Bagotville, Quebec in 1988. He became Commanding Officer of 425 Tactical Fighter Squadron at Bagotville in 2000 (in which role he supported NATO forces in the former Yugoslavia), a member of the Canadian staff in NORAD Headquarters in 2002 and Commander of 3 Wing Bagotville in 2004. He was deployed to Afghanistan, as Director of Staff in ISAF Headquarters, in 2006 and then assigned as Deputy Commander Force Generation at 1 Canadian Air Division in Winnipeg in 2007. He attended the Space Operations Course for senior leaders at the National Security Space Institute in January 2008 and served as the Commander of 1 Canadian Air Division / Canadian NORAD Region from July 2009 to July 2011 when he was appointed Assistant Chief of the Air Staff. He became Commander of the Royal Canadian Air Force on September 27, 2012.

Output:
3