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: Which of the conflicts that occured between 1918 and 1921 occured first? Passage 1:A large portion of the Vilnius area was controlled by the Second Polish Republic during the interwar period, particularly the area of the Republic of Central Lithuania, which had a significant Polish speaking population. For example, the Wilno Voivodeship (25% of it is a part of modern Lithuania and 75% - modern Belarus) in 1931 contained 59.7% Polish speakers and only 5.2% Lithuanian speakers; see Ethnic history of the region of Vilnius for details. From 1918 to 1921 there were several conflicts, such as the activity of the Polish Military Organization, Sejny uprising (that was met with massive outrage in Lithuania) and a discovered attempt at a Polish coup on the Lithuanian government. From the documents stolen from Polish Military Organization headquarters safe in Vilnius and given to Prime Minister of Lithuania Augustinas Voldemaras, it is clear that this plot was directed by Józef Piłsudski himself. The Polish-Lithuanian War and Żeligowski's Mutiny contributed to a worsening of Polish-Lithuanian relations; increasingly Polish people were viewed with suspicion in Lithuania. The loss of Vilnius was a stunning blow to Lithuanian aspirations and identity, and the unrelenting irredentist demand for its return became one of the most important elements of Lithuanian political and social life in the interwar period. The irredentist campaign resulted in the emergence of feelings of hatred and revenge directed against the Poles in the Lithuanian society. In fact, the largest social organization in interwar Lithuania was the League for the Liberation of Vilnius, which propagated irredentist views in its magazine Mūsų Vilnius (Our Vilnius).
 Passage 2:The first officially sanctioned European club tournament, the European Champion Clubs' Cup, was launched in 1955. Conceived by Gabriel Hanot, the editor of L'Équipe, as a competition for winners of the European national football leagues, it is considered the most prestigious European football competition. Hibernian had only finished fifth in the 1954–55 Scottish league, but were one of the 16 sides invited to take part in the tournament's first season. As there was no English representative in the first competition, Hibernian also became the first British club to participate in European club competition. In their first tie, Hibernian defeated Rot-Weiss Essen (West Germany) thanks to a comfortable win in the away leg. Swedish club Djurgardens were their next opponents, but they were unable to play the home match in Stockholm due to adverse winter weather. Both legs were played in Scotland, with the Djurgardens "home" venue being Firhill. Hibernian won 3–1 in Glasgow and 1–0 at Easter Road to progress to the semi-finals. At that stage they were drawn with French club Reims, who won 3–0 on aggregate to progress to the final (which Reims lost 4–3 to Real Madrid).
 Passage 3:She posed nude for Playboy magazine in October 1999, appeared in two episodes of Freaks and Geeks in 2000, and appeared in the She Spies 2002 episode "Spy vs Spy". In 2004, she returned to the live stage (and to Laguna Beach, California, where she had attended high school), starring in the United States premiere of Michael Weller's play What the Night is For, with Kip Gilman, directed by Richard Stein, at the Laguna Playhouse. She starred in the BBC comedy series Broken News in 2005. She also plays Janine Foster, mother of Peri Brown, in the Doctor Who audio drama The Reaping, produced by Big Finish Productions released in the United Kingdom in September 2006.

Output:
1