Given the task definition and input, reply with output. 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: In what city was Thesiger educated before attending Royal Military College? Passage 1:The United States of America will compete at the 2015 World Championships in Athletics from August 22 to August 30 in Beijing, China. The membership of the team was selected at the 2015 USA Outdoor Track and Field Championships. However, membership on the team was subject to the athlete achieving a qualification standard. In addition, champions from the previous World Championships and the 2014 IAAF Diamond League receive an automatic bye. An automatic entry is also available to an Area Champion, the IAAF definition of an Area essentially being the specified continental areas of the world. The United States is part of the North American, Central American and Caribbean Athletic Association, which held its championship August 7–9, 2015 in San Jose, Costa Rica where 20 athletes qualified. The deadline for entries was August 10. The final team membership as submitted to the IAAF was announced on August 10, 2015.
 Passage 2:After playing junior hockey in Saskatoon, Saskatchewan, McNab played on the Omaha Knights of the USHL in the 1946–48 season before being called up to the Detroit Red Wings of the National Hockey League in 1947. He would play on and off with the Red Wings until 1951, playing on the team that won the Stanley Cup in 1950. He played for the Indianapolis Capitols of the American Hockey League in 1950–51. Before the 1951–52 season, he was traded by the Red Wings to the Chicago Black Hawks, but never played for the team. Back surgery kept him out of action in 1951–52 and McNab then joined the New Westminster Royals of the Western Hockey League, where he played for seven seasons, retiring in 1959. He was voted league MVP in 1955, scoring 32 goals and 81 points.
 Passage 3:Thesiger was educated at Eton College before attending the Royal Military College, Sandhurst for training as an infantry officer. Aged 22, Thesiger was Gazetted into the Rifle Brigade as a second lieutenant on 19 March 1890, and served with his unit in England until 1898, when the regiment was dispatched to Egypt. During his service in England he was promoted to lieutenant on 10 February 1892, and to captain on 26 July 1897. In Egypt, the Rifle Brigade served on the Nile expedition under Horatio Kitchener during the Mahdist War and was present at the Battle of Omdurman which decided the campaign. Thesiger received a brevet appointment as major on 16 November 1898 for his service.
3