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: How many people climbed El Capitan solo before Mike Hoover? Passage 1:Mike Hoover is an American mountaineer, rock climber and cinematographer. He first became known for an Academy Award-nominated documentary short, Solo, in which he climbed El Capitan solo. His first major involvement in commercial film was with The Eiger Sanction (1975), in which he taught Clint Eastwood how to climb in the Yosemite valley before the film was shot in Grindelwald, Switzerland in 1974. Hoover has since been a cinematographer for the documentaries To the Ends of the Earth (1983), To the Limit (1989), The Endless Summer 2 (1994) and Zion Canyon: Treasure of the Gods. In the late 1980s, he made 18 trips to Afghanistan to shoot war footage that was later featured in a program named The Battle for Afghanistan (1987). Hoover has led various film teams all over the world, particularly in physically and politically difficult locations, such as Everest, K2, the precarious rock faces of the Eiger and the Venezuelan jungle.
Passage 2:Georg Heinrich August Ewald (16 November 1803 4 May 1875) was a German orientalist, Protestant theologian, and Biblical exegete. He studied at the University of Gottingen. In 1827 he became extraordinary professor there, in 1831 ordinary professor of theology, and in 1835 professor of oriental languages. In 1837, as a member of the Gottingen Seven, he lost his position at Gottingen on account of his protest against King Ernst August's abrogation of the liberal constitution, and became professor of theology at the University of Tubingen. In 1848, he returned to his old position at Gottingen. When Hanover was annexed by Prussia in 1866, Ewald became a defender of the rights of the ex-king. Among his chief works are: Complete Course on the Hebrew Language (), The Poetical Books of the Old Testament (), History of the People of Israel (), and Antiquities of the People of Israel (). Ewald represented the city of Hanover as a member of the Guelph faction in the North German and German Diets.
Passage 3:In 2014, Ivanovic enjoyed a resurgence and attained a number of career-best achievements. She began the year by winning her first title in three years at the ASB Classic, defeating former world No. 1 Venus Williams in three sets before upsetting the reigning world No. 1 Serena Williams en route to her second Australian Open quarterfinal where she lost in three sets to thirtieth seed, Eugenie Bouchard. During the clay court season, Ivanovic reached her third final of the year at the Porsche Tennis Grand Prix, losing to two-time defending champion Maria Sharapova; the quarterfinals of the Mutua Madrid Open and the semi-finals of the Internazionali BNL d'Italia, defeating Sharapova for the first time since 2007 en route but was ultimately upset by Lucie Safarova in the third round of the French Open. She rebounded by winning her first career singles title on grass at the Aegon Classic before reaching the final of the Western & Southern Open (her first top tier Premier final since 2009) and thus returned to the top ten of the WTA rankings for the first time in five years as a result. In September, Ivanovic reached her sixth singles final of the year (a new career-best) at the Toray Pan Pacific Open, where she defeated Caroline Wozniacki to claim her fourth title of the season, the most titles she won in a single season.

Output:
1