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: Who was the leader of the British Conservative Party in 1991? Passage 1:Founded in 1991 as the pro-free market wing of the Civic Forum by Václav Klaus and modelled on the British Conservative Party, the ODS won the 1992 legislative election, and has remained in government for most of the Czech Republic's independence. In every legislative (except for the 2013 election) it emerged as one of the two strongest parties. Václav Klaus served as the first Prime Minister of the Czech Republic after the partition of Czechoslovakia, from 1993 to 1997. Mirek Topolánek, who succeeded him as leader of the party in December 2002, served as Prime Minister from 2006 to 2009. In the 2010 election, the party lost 28 seats, finishing second, but as the largest party right of the centre, it formed a centre-right government with Petr Nečas as Prime Minister. In the 2013 legislative election, the party was marginalized by only securing 16 seats in the Chamber of Deputies, relegating the party to the opposition since July 2013. In the 2017 legislative election, it has partly recovered and secured 25 seats in the Chamber of Deputies, making it the second strongest party in chamber. The party is currently being led by Petr Fiala, who has been leader since the 2014 party convention.
 Passage 2:"From Her Lips to God's Ears (The Energizer)" is a song by the Gainesville, Florida-based punk rock band Against Me!, released as the second single from their 2005 album Searching for a Former Clarity. Like the first single "Don't Lose Touch", it was released exclusively on twelve-inch vinyl with a remixed version of the song as the A-side and the album version as the B-side. The A-side version was remixed by Ad-Rock of the Beastie Boys. The single was limited to 3,185 copies. The lyrics of the song address then-United States Secretary of State Condoleezza Rice on the subject of the Iraq War, with lines such as "After all this death and destruction, do you really think your actions advocate freedom?" and "Condoleezza, what are we gonna do now?"
 Passage 3:The military history of the Aleutian Islands began almost immediately following the purchase of Alaska from the Russian Empire by the United States in 1867. Prior to the early 20th century, the Aleutian Islands were essentially ignored by the United States Armed Forces, although the islands played a small role in the Bering Sea Arbitration when a number of British and American vessels were stationed at Unalaska to enforce the arbitrators' decision. By the early 20th century, a number of war strategies examined the possibility of conflict breaking out between the Empire of Japan and the United States. While the Aleutian Islands were seen as a potential staging point for invasions by either side, this possibility was dismissed owing to the islands' dismal climate. In 1922, the Washington Naval Treaty was signed, after which the United States Navy began to take an interest in the islands. However, nothing of significance was to materialize until World War II.
1