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: When was the Pierpont Morgan Library built? Passage 1:The Abbasid-era geographers report that the town was the centre of a flourishing agricultural region, with a number of dependent suburbs such as Qasr-i Ahnaf. According to al-Muqaddasi, who wrote in ca. 980, the locals were kin of the people of Gharjistan, and the town was a dependency of the rulers, or Shirs, of Gharjistan. A section of the Harbiyya district of the Round city of Baghdad was named Marwrūdiyya () after the people from this city. The town continued to flourish under the Seljuk Empire, when the Seljuk ruler Ahmad Sanjar built the city a new wall, some 5,000 paces in circumference. The town and the surrounding area suffered during the constant conflicts between the Khwarazmshahs and the Ghurids in the late 12th century, and a battle was fought there between the Ghurid ruler Ghiyath al-Din Muhammad (r. 1163–1202) and his Khwarazmian rival Sultan Shah (r. 1172–1193) in 1190. Although the town appears to have escaped the destruction of Marw al-Shahijan by the Mongols, it fell into ruin under the Timurids and was largely abandoned.
 Passage 2:The Midnighters were an American R&B group from Detroit, Michigan. They were an influential group in the 1950s and early 1960s, with many R&B hit records. They were also notable for launching the career of lead singer Hank Ballard and the worldwide dance craze the Twist. Between 1953 and 1962 the Midnighters had almost two dozen hits on the U.S. Pop & R&B charts. Their big hits included the million-selling Billboard Top 10 pop hits "Finger Poppin' Time" (for which they received a 1961 Grammy Award nomination), and "Let's Go, Let's Go, Let's Go". The Midnighters also had 13 Top 10 R&B hits, including three that reached number 1. Their Top 10 R&B hits included "Work with Me, Annie", "It's Love Baby (24 Hours a Day)", "Annie Had a Baby", "The Hoochi Coochi Coo", "Teardrops on Your Letter", "Get It", "The Float" and "Nothing but Good". They received the Rhythm and Blues Foundation's prestigious Pioneer Award in 1992 and were inducted into the Vocal Group Hall of Fame in 1999. The Midnighters are also noted for achieving a music industry milestone in 1960, by becoming the first group in history to place 3 singles in the Billboard Hot 100 at the same time. The group's lead singer, Hank Ballard, was inducted into the Rock and Roll Hall of Fame in 1990. The Midnighters as a group were inducted into the Rock and Roll Hall of Fame on April 14, 2012.
 Passage 3:Dorothy Eugenia Miner was born in New York City, New York, on 4 November 1904. She attended the Horace Mann School before she enrolled in Barnard College in 1922, receiving her bachelor's degree four years later. Miner became the first Barnard International Fellow and studied at the Bedford College of the University of London. She studied medieval manuscript illumination with Meyer Schapiro at Columbia University in 1928–29 and received a fellowship to continue working on her dissertation on a Carolingian Apocalypse manuscript the following year. Miner was hired by the Pierpont Morgan Library to prepare an exhibition of illuminated manuscripts in 1933–34 and the director of the library, Belle da Costa Greene, recommended her for the position of keeper of manuscripts at the Walters Art Gallery, in Baltimore, Maryland. She got the job and became of the first professionally trained art historians working in an American museum. She was also curator of Islamic and Near Eastern Art as well as the head of the reference library for several years. From 1938 to 1969 Miner edited the Journal of the Walter Gallery and many catalogues published by the museum. She died of cancer in Baltimore in May 1973.

Output:
3