You will be given a definition of a task first, then some input of the task.
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: How old is the college that Rawson graduated from in 1908? Passage 1:On graduation from Royal Military College, Sandhurst, in 1908, Rawson was commissioned into the Royal Engineers as a second lieutenant. He was promoted lieutenant on 18 August 1910. By 20 November 1915 he had been promoted to captain, and he was then given command of a signals company at a corps headquarters, with a temporary majority, he was awarded the Military Cross (MC) in the 1916 King's Birthday Honours. His temporary rank became a brevet on 3 June 1917. He was appointed assistant director, army signals (with the acting rank of lieutenant-colonel) on 19 April 1917, relinquishing the post (and the rank) on 13 November 1917. He was then appointed a Staff Captain at the War Office on 6 April 1918. He formally transferred from the Engineers to the newly established Royal Corps of Signals on 22 March 1921, and since taking up the post of Staff Captain, had been appointed an Officer of the Order of the British Empire.
 Passage 2:Lafosse studied at the IAD (Institut des arts de diffusion) at Louvain-la-Neuve between 1997 and 2001. His graduation film Tribu, a 24-minute short, won the best Belgian short subject category at the 2001 Namur Film Festival. His first full-length feature, Folie Privée (2004), won the FIPRESCI award at the Bratislava International Film Festival., and the semi-autobiographical Ça rend heureux (2006) took the Grand Prix at the 2007 Premiers Plans d'Angers festival. 2006 also saw the release of Nue Propriété, starring Isabelle Huppert and brothers Jérémie and Yannick Renier, which debuted at the Venice Film Festival where it was nominated for the Golden Lion and won a SIGNIS award. The film received the André Cavens Award for Best Film by the Belgian Film Critics Association (UCC). For his film Private Lessons (Élève libre), he was nominated for two Magritte Awards in the category of Best Director and Best Screenplay.
 Passage 3:In 1863 he married Helen Magruder, daughter of Commodore George Allan Magruder, of the United States Navy. They had one son, James. They had two daughters, Ella Campbell Scarlett who studied medicine at London School of Medicine for Women and the Royal Free Hospital and became the first female doctor in the state of Bloemfontein, South Africa, and Evelina, who married Major Henry Haverfield, was a suffragette and an aid worker during World War I. One of the two main family estates at this time (the other being the house that is today Inverlochy Castle Hotel) was Abinger Hall, at the foot of the North Downs in Abinger, Surrey. The third baron sold it in 1867 to a Mr Gwynne, who soon thereafter sold it to become the family seat of the statistician recently created first Lord Farrer, who rebuilt the house on that land.

Output:
1