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: Who won the $2,800 at the 1971 NASL tournament? Passage 1:Charles-Joseph Lamoral, 7th Prince de Ligne in French; in German Karl-Joseph Lamoral 7. Furst von Ligne (also known as Karl Furst von Ligne or Furst de Ligne): (23 May 1735 13 December 1814) was a Field Marshal, inhaber of an infantry regiment, prolific writer, intellectual, member of the princely family of Ligne, and Habsburg Austrian subject. He fought as a field officer during several famous battles during the Seven Years' War and briefly returned to military duty in the War of the Bavarian Succession. He performed an important diplomatic mission to Catherine the Great in 1787 and led troops against the Ottoman Empire at Belgrade in 1789. Beginning in the 1770s, he authored an impressive volume of work. After his estates in the Austrian Netherlands were lost to France during the War of the First Coalition, he lived in Vienna. All three of his sons died before him, but his wife and four daughters all outlived him. His grandson, the 8th Prince, became a Belgian statesman.
Passage 2:Dillon returned to Reading in 1995 and held a number of roles within Reading's academy. He was also reserve team manager before he replaced Martin Allen as Alan Pardew's assistant in November 2001. Under the guidance of the management duo, the Royals were promoted to Division 1 after finishing as runners-up to Brighton & Hove Albion in the 200102 season. Pardew resigned in September 2003 and Dillon stepped in as the caretaker manager, until Steve Coppell was appointed in October 2003. At this point Dillon reverted to his role as the number two. Dillon passed his UEFA Pro Licence in 2004 and in the 200506 season Reading won the Championship with a record of 106 points. In their first season in the Premier League Reading finished 8th. In May 2007, Dillon followed Coppell's lead in committing himself to Reading for a further two seasons. They were relegated back to the Championship the next season and in May 2009 following the resignation of Coppell, Dillon alongside other first-team coach Wally Downes, left Reading following the team's failure to gain promotion back to the Premier League.
Passage 3:The NASL first staged an indoor tournament in 1971 at the St. Louis Arena with a $2,800 purse. After a couple of years of experimenting, including a three-city tour by the Red Army team from Moscow in 1974, the league again staged tournaments in 1975 and 1976. For many years Tampa Bay owner George W. Strawbridge, Jr. lobbied his fellow owners to start up a winter indoor season, but was always stone-walled. For several years, his Rowdies and several other teams used winter indoor "friendlies" as part of their training and build-up to the outdoor season. In the meantime, pressed by the rival Major Indoor Soccer League (MISL), which inaugurated play in 1978, two-day mini-tournaments like the Skelly Invitational and the NASL Budweiser Invitational were held with varying degrees of success. The NASL finally started a full indoor league schedule, a 12-game season with 10 teams, in 197980. For the 198081 season, the number of teams playing indoor soccer increased to 19 and the schedule grew to 18 games. The schedule remained at 18 games, but the teams participating decreased to 13 for the 198182 season. The league canceled the 198283 indoor season and three teams (Chicago, Golden Bay, and San Diego) played in the MISL for that season. Four other teams (Fort Lauderdale, Montreal, Tampa Bay and Tulsa) competed in a short NASL Grand Prix of Indoor Soccer Tournament in early 1983. The NASL indoor season returned for 198384 with only seven teams but a 32-game schedule.

Output:
3