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: How old was Claudius at the start of the first book? Passage 1:The Eagles of the Empire series centres upon two main protagonists, Quintus Licinius Cato and Lucius Cornelius Macro, who are both Roman soldiers. Macro, a veteran with nearly 15 years' service (at the start of the first novel) in the Roman Army, has recently been appointed to the Centurionate. Cato is in his teen years, grew up in the Imperial Palace as a slave, and at the start of the series joins the Eagles as Macro's Optio. The first book starts in 42 AD. The books cover the experiences of the two soldiers, initially as experienced centurion and new optio, in battles in Germania and the invasion of Britain by Claudius as part of the Legio II Augusta. The 6th book The Eagle's Prophecy has them serving as part of the Imperial Navy east of Italy. The 7th and 8th put them in Rome's eastern provinces as agents of the Emperor's secretary Tiberius Claudius Narcissus. The 9th sees them shipwrecked on the island of Crete, fighting against a full-scale uprising. The 11th is set in Rome with the leads hoping to save the emperor from the shady Liberators. The Blood Crows is set once again in Britannia. The two protagonists are faced with defeating tribal rebels.
 Passage 2:Following the establishment of the Tokugawa shogunate, the Maeda clan were confirmed as daimyō of Kaga Domain, which included most of Etchū Province. Maeda Toshinaga, the son of Maeda Toshiba and second daimyō of Kaga Domain rebuilt the castle and temporarily used it as his retirement home until much of it burned down in 1609. His grandson, Maeda Toshitsugu was awarded a 100,000 koku holding in Etchū Province in 1639, the forming Toyama Domain; however, initially his fief did not include Toyama Castle. Unable to raise funds to build his own castle, in 1659 he reached an agreement with Kaga Domain to exchange some of holdings for Toyama Castle and the surrounding lands. In 1661, he received permission from the Tokugawa shogunate to rebuild the castle and to lay out a new castle town. His descendants ruled over Toyama from here until the Meiji Restoration. Many of the structures of the castle and its rampant were destroyed by the 1858 Hietsu earthquake, and most of what survived was destroyed by order of the new Meiji government in 1871.
 Passage 3:One of the later signings of the summer was goalkeeper Len Hill, who joined from Queens Park Rangers in June 1925. Regular keeper Tommy Allen had turned down a new contract at the club, leading to the signing of Hill as his replacement. Allen later agreed to new terms in October and returned to his place as first-choice Southampton goalkeeper, with Hill making sporadic appearances later in the season. Transfer activity continued throughout the season. In December 1925 the club signed inside-forward Jim Swinden from Salisbury City, following a trial in which he scored two goals on his debut for the reserve side against Folkestone. In March 1926, right-half Bill Adams joined from Southern League side Guildford United. Needing money to purchase the freehold of The Dell, Southampton sold mainstay full-backs Fred Titmuss and Tom Parker in early 1926 – the former in February to Plymouth Argyle for £1,750; the latter in March to Arsenal for £3,250 – which "caused uproar amongst supporters".

Output:
1