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 students did Northwestern University have enrolled the year that Margaret Danner was born? Passage 1:In October 1916, shortly after Romania entered World War I, he began studying at the reserve officers' school in Botosani. From spring 1917 to March 1918, he fought on the front as a student master sergeant. He later recalled his wartime experiences in Amintiri. Notatii autobiografice, pointing out the absurdity and uselessness of many of the army's actions. He found that officers, rather than judging based on circumstances, hid behind regulations, and that the troops' activities were subject to little real oversight. In October 1918, near the war's end, he enrolled in the literature and philosophy faculty of Bucharest University, graduating in 1922. Initially intending to study sociology, he changed his mind when he found that his professor Ion A. Radulescu-Pogoneanu did not know the material. Bagdasar then opted for the history of philosophy, taught by a youthful Mircea Florian, whom he found erudite. While a student, he was an editor for Gazeta Transilvaniei, a newspaper based in Brasov, in the newly acquired Transylvania region. Following graduation and with the help of Mihai Popovici, he earned a scholarship at the University of Berlin, where he studied from 1922 to 1926. At Berlin, he took courses with Carl Stumpf, Heinrich Maier and Max Dessoir, and was active in the Kant-Gesellschaft society. He also acquired a solid grounding in Kantianism. He took his doctorate in 1926; it was titled Der Begriff des theoretischen Wertes bei Rickert ("The Notion of Theoretical Value in Rickert").
Passage 2:Olubowale Victor Akintimehin was born on September 21, 1984, in Northwest, Washington, D.C.. His parents were both from the Yoruba ethnic group of southwestern Nigeria, and both of them came from Austria to the United States in 1979. Wale's family first lived in Northwest, Washington, D.C. and then moved to Montgomery County, when Wale was at the age of 10. In 2002, he graduated from the Quince Orchard High School in Gaithersburg, Maryland, and moved to Largo, Maryland in Prince George's County. Wale attended Robert Morris University and Virginia State University on football scholarships, then transferred to Bowie State University. However, he dropped out due to academic reasons. Wale's love of the game of football and the Washington Redskins has led to a longstanding rumor that Wale had a tattoo of tight end Chris Cooley. He's also the cousin of an actor Gbenga Akinnagbe, who is best known as for playing Chris Partlow on HBO's The Wire. Wale's first recorded track, called "Rhyme of the Century", became his first song to ever be played on the local radio. In 2006, he was featured in the "Unsigned Hype" column of The Source magazine, and later signed to a local label, Studio 43. The track, called "Dig Dug (Shake It)" became popular in Washington, D.C., Maryland and Virginia, and was a tribute to Ronald "Dig Dug" Dixon, who was a percussion player for the go-go band Northeast Groovers. The song became the most requested song by a local artist in Washington D.C. radio history and Wale was the first local artist to get some BDS spins since DJ Kool in the early 1990s. The song was included in Wale's first mixtape, Paint a Picture.
Passage 3:Born in 1915, Margaret Esse Danner came of age in Chicago during the Great Migration. Sources place her birth in Pryorsburg, Kentucky, in 1915, although she adamantly claimed Chicago as her birthplace. In eighth grade, she won first prize in a school contest for "The Violin", a poem describing Stradivarius and Guarnerius violins. Danner's college education included courses at Loyola University, Northwestern University, YMCA College, and the newly founded Roosevelt College. Perhaps equally significant was her education in the African-American cultural community of Chicago's South Side, which in the 1930s and 1940s harbored grassroots cultural institutions and informal circles devoted to politics, education, art and literature and often tied to the Communist Popular Front. Although Danner stayed detached from Communism and would eventually oppose all radical politics, she participated in various South Side groups, including Inez Cunningham Stark's poetry workshop at the South Side Community Art Center, along with Gwendolyn Brooks and Margaret Goss Burroughs, her "sometime friends (and rivals)." In 1946, Danner founded Art Associates to gather and promote Chicago's black writers and poets. She counted as friends the poet and critic Edward Bland, as well as Hoyt Fuller, who would head the revived Negro Digest (later Black World) beginning in 1951.

Output:
3