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.
Q: Question: How old was Snow Chief in the 1986 Kentucky Derby race? Passage 1:Solis' first rode in the Kentucky Derby in 1983 on a longshot named Current Hope, and did not place in the money. He rode the Derby again in 1986 on Snow Chief, who had won the Santa Anita Derby and was the morning line favorite, but again finished well back. The horse and rider went on to with the Preakness Stakes that year, marking Solis' only win to date in an American Triple Crown race. He was third in the 1991 Derby on Mane Minister, and also third in the Belmont Stakes on the same horse. Solis finished second in the Kentucky Derby and third in the Preakness with Captain Bodgit in 1997, second in the Derby with Victory Gallop in 1998 and second in both the Derby and the Belmont with Aptitude in 2000. His first Breeders' Cup win was the 2000 Breeders' Cup Sprint on Kona Gold. He won two Breeders' Cup races in 2003 with Johar (who finished in a dead heat) in the Breeders' Cup Turf, and the Breeders' Cup Classic on Pleasantly Perfect, both trained by Richard Mandella. He ended 2003 ranked fourth nationally in purse earnings with a career-best $16,304,252.
Passage 2:Afterwards, Robertson went on to attend a series of shorter training courses in Britain. He attended the School of Musketry at Hythe, Kent; the Machine Gun School at Netheravon, Wiltshire; the Artillery College at Woolwich; the Anti-Gas School at Porton Down; the Anti-Aircraft School at Westerham, Kent; and the Royal Tank Corps School at Woolwich. He returned to Australia in 1925 to become Chief Instructor at the Small Arms School at Randwick, New South Wales in 1926. Following the retirement of General Sir Harry Chauvel in 1930, Robertson was posted to the 7th Infantry Brigade as its brigade major. In 1931 he became brigade major of the 1st Cavalry Brigade in Queensland. He returned to Sydney in February 1934 as General Staff Officer (Grade 2) at the 2nd District Base. In June 1934, he was appointed Director of Military Art at the Royal Military College, which had been transferred to Victoria Barracks, Sydney, as a cost-cutting measure during the Great Depression. It returned to Canberra in 1937, and Robertson returned with it.
Passage 3:Paul Leroy Robeson ( ; April 9, 1898 January 23, 1976) was an American bass baritone concert artist and stage and film actor who became famous both for his cultural accomplishments and for his political activism. Educated at Rutgers College and Columbia University, he was also a star athlete in his youth. He also studied Swahili and linguistics at the School of Oriental and African Studies, London in 1934. His political activities began with his involvement with unemployed workers and anti-imperialist students whom he met in Britain and continued with support for the Loyalist cause in the Spanish Civil War and his opposition to fascism. In the United States he also became active in the Civil Rights Movement and other social justice campaigns. His sympathies for the Soviet Union and for communism, and his criticism of the United States government and its foreign policies, caused him to be blacklisted during the McCarthy era.

A:
1