Instructions: 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: Is the head coach of the Cyclones' 2011 football team still at Iowa State? Passage 1:After her professional debut in 1831, Brambilla initially sang in several smaller opera houses in northern Italy but in 1833 scored a considerable success at Milan's Teatro Carcano singing Agnese in Bellini's Beatrice di Tenda and the leading soprano role in Fioravanti's Le cantatrici villane. She then appeared on Russia at the Odessa Opera House, which at the time specialised in Italian opera. Upon her return to Milan in 1837, she sang with her sister Marietta at La Scala in the world premiere of In morte di Maria Malibran de Bériot, a cantata in memory of Maria Malibran composed by Gaetano Donizetti, Giovanni Pacini, Saverio Mercadante, Nicola Vaccai and Pietro Antonio Coppola. After singing in Barcelona, she returned to La Scala for the 1839/1840 season in Mercadante's Le due illustri rivali and the world premieres of Mazzucato's I corsari and Coccia's Giovanna II.
 Passage 2:Getty Square is Yonkers' downtown and the civic center and central business district of the city. Much of southwest Yonkers grew densely along the multiple railroads and trolley (now bus) lines along South Broadway and in Getty Square, connecting to New York City. Clusters of apartment buildings surrounded the stations of the Yonkers branch of the New York and Putnam Railroad and the Third Avenue Railway trolley lines and these buildings still remain although now served by the Bee-Line Bus System. The railroad companies themselves built neighborhoods of mixed housing types ranging from apartment buildings to large mansions in areas like Park Hill wherein the railroad also built a funicular to connect it with the train station in the valley. This traditionally African-American and white area has seen a tremendous influx of immigrants from Mexico, Central America, the Caribbean, South Asia, and the Middle East. Off South Broadway and Yonkers Avenue one can find residential neighborhoods, such as Lowerre, Nodine Hill, Park Hill, and Hudson Park (off the Hudson River) with a mix of building styles ranging from dense clusters of apartment buildings, blocks of retail with apartments above, multifamily row houses, and detached single-family homes.
 Passage 3:The 2011 Iowa State Cyclones football team represented Iowa State University in the 2011 NCAA Division I FBS football season. The Cyclones were led by third year head coach Paul Rhoads and play their home games at Jack Trice Stadium. They are a member of the Big 12 Conference. The conference play began with a loss at home to the Texas Longhorns, and ended with a loss at Manhattan, Kansas to the Kansas State Wildcats in the Farmageddon series, with a 3–6 record. The season will likely be remembered for the game against then #2 Oklahoma State Cowboys, who the Cyclones upset in a double-overtime thriller throwing the BCS into "utter chaos" as dubbed by sports media. The Iowa State squad was invited to the first Pinstripe Bowl game, which they were defeated by Rutgers, and the Cyclone's 2011 season came to a close with 6–7 overall record, 3–6 in Big 12 play, finished 8th place.

Output:
3