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 grape is used to make the least wine in Mosel? Passage 1:The 199798 Michigan Wolverines men's basketball team represented the University of Michigan in intercollegiate college basketball during the 199798 season. The team played its home games in the Crisler Arena in Ann Arbor, Michigan, and was a member of the Big Ten Conference. Under the direction of head coach Brian Ellerbe, the team finished fourth in the Big Ten Conference. The team emerged victorious in the inaugural 1998 Big Ten Conference Men's Basketball Tournament. The team earned an invitation to the 1998 NCAA Men's Division I Basketball Tournament as a number three seed where it was eliminated in the second round. The team was ranked for twelve of the eighteen weeks of Associated Press Top Twenty-Five Poll, starting the season unranked, peaking at number twelve where it ended the season, and it also ended the season ranked twelve in the final USA Today/CNN Poll. The team had a 43 December 13, 1997, against #1 Duke 8173 at home, December 26, 1997, against #19 Syracuse 9361 at the Puerto Rico Holiday Classic, Eugene Guerra Sports Complex in San Juan, Puerto Rico, February 1 against #16 Iowa 8066 on the road, March 8 against #9 7667 at the 1998 Big Ten Conference Men's Basketball Tournament at the United Center. The victory over Duke was one of only two victories over the number one ranked team in the country in the history of the school.
Passage 2:Cham Joof was born on 22 October 1924 at 7 Griffith Street (Half-Die) in Bathurst now Banjul, the capital of the Gambia. He came from a Serer and Wolof background. He was the third child and the eldest son of Ebrima Joof (18871949) and Aji Anna Samba (1896 9 April 1977). On his father's side (the Joof family), he was a descendant of the Joof Dynasty of Sine and Saloum, and the Njie Dynasty of Jolof. On his mother's side, he was the great grand-nephew of Tafsir Sa Lolly Jabou Samba a 19th-century Senegambian jihadist, military strategists and advisor to Maba Diakhou Ba and one of the commanders of his army. Cham Joof was the elder brother of Gambian barrister Alhaji Bai Modi Joof.
Passage 3:Mosel is one of 13 German wine regions (Weinbaugebiete) for quality wines (Qualitatswein, formerly QbA and Pradikatswein), and takes its name from the Mosel River (. Luxembourgish: Musel.). Before 1 August 2007 the region was called Mosel-Saar-Ruwer, but changed to a name that was considered more consumer-friendly. The wine region is Germany's third largest in terms of production but some consider it the leading region in terms of international prestige. The region covers the valleys of the rivers Mosel, Saar, and Ruwer from near the mouth of the Mosel at Koblenz and upstream to the vicinity of Trier in the federal state of Rhineland-Palatinate. The area is known for the steep slopes of the region's vineyards overlooking the river. At 65 degrees incline, the steepest recorded vineyard in the world is the Calmont vineyard located on the Mosel and belonging to the village of Bremm, and therefore referred to as Bremmer Calmont. The Mosel is mainly famous for its wines made from the Riesling grape, but Elbling and Muller-Thurgau also contribute to the production, among others. In the past two decades red wine production, especially from the Spatburgunder (Pinot noir), has increased in the Mosel and throughout the German vignoble and has become of increasing interest to the international wine community. Because of the northerly location of the Mosel, the Riesling wines are often light, tending to lower alcohol, crisp and high in acidity, and often exhibit "flowery" rather than or in addition to "fruity" aromas. Its most common vineyard soil is derived in the main from various kinds of slate deposits, which tend to give the wines a transparent, mineralic aspect, that often exhibit great depth of flavor. In the current era of climate change much work has been done to improve and gain acceptance for completely dry ("Trocken") Rieslings in this region, so that most of the more famous makers have found acceptance for such wines, particularly in Europe.

Output:
3