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: Which of the regiments that Ellwood served in was the largest? Passage 1:Ellwood graduated from Duntroon in 1990 and was commissioned into the Royal Australian Infantry Corps. His early career included postings as a platoon commander in the 2nd/4th Battalion, Royal Australian Regiment and as an instructor in field training and tactics at Duntroon, before he was seconded to the British Army from 1998 for a two-year exchange with the Irish Guards, then stationed in Germany. During the secondment he deployed as part of the NATO intervention in the Kosovo War in 1999, serving as second-in-command of an armoured infantry company in the King's Royal Hussars Battle Group. For his service in Kosovo, Ellwood was awarded a Commander British Forces Commendation. He returned to Australia as a company commander and operations officer in the 5th/7th Battalion, Royal Australian Regiment (5/7RAR). Ellwood commanded B Company on operations in East Timor from October 1999 to April 2000, when 5/7RAR deployed with the International Force East Timor.
 Passage 2:FM 1220 begins at an intersection with SH 183 in the Far Greater Northside area of Fort Worth. The highway travels in a northwestern direction along Azle Avenue through a residential area and runs along the northern edge of Sansom Park before entering Lake Worth. In Lake Worth, FM 1220 has a junction with I-820 and turns north onto Boat Club Road near Lake Worth High School. The highway travels in a northern direction near several subdivisions, running between Lake Worth and Marine Creek Reservoir, before re-entering Fort Worth near Saginaw. FM 1220 continues to run near several subdivisions in far northwest Fort Worth and turns west north of an intersection with Park Drive, then enters the town of Eagle Mountain. The highway runs through the town and runs close to Eagle Mountain Lake. West of Eagle Mountain, the Boat Club Road designation leaves the highway, with FM 1220's local designation becoming Morris Dido Newark Road. The highway runs in a northwestern direction near the eastern shore of Eagle Mountain Lake with state maintenance ending at Peden Road at the southern boundary of Pecan Acres; Morris Dido Newark Road continues past Peden Road for another to FM 718 near Newark.
 Passage 3:Kavanagh was a Marvel Comics editor from 1985 to 1997. Titles he edited during that time included Marvel Comics Presents and Nick Fury, Agent of S.H.I.E.L.D. Writer/artist Alan Davis, who Kavanagh edited on Excalibur, said "Terry Kavanagh spoiled me, gave me near total freedom, and encouraged me to experiment." In 1987, he began to write for Marvel with his first published story "Cry Vengeance!" appearing in Kickers, Inc. #4 (Feb. 1987). He later wrote such titles as Marc Spector: Moon Knight, Avengers: Timeslide, X-Man and X-Universe. In Web of Spider-Man #100 (May 1993), Kavanagh and artist Alex Saviuk gave the lead character "Spider-Armor". He wrote the Spider-Man/Punisher/Sabretooth: Designer Genes one-shot the following month. Kavanagh was one of the writers on the "Maximum Carnage" storyline which ran through the various Spider-Man titles in 1993. The first Black Cat limited series was co-written by Kavanagh and Joey Cavalieri in 1994. Kavanagh pitched a storyline involving the return of Spider-Man's clone, which then formed the basis of the "Clone Saga" which began in Web of Spider-Man #117 (Oct. 1994). Kavanagh's last new comics project was the Before the Fantastic Four: The Storms limited series in 2000–2001.

Output:
1