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 were enrolled in the University of Kansas the year Schnellbacher was born? Passage 1:A week after graduating from AMDA she was cast in the role of Maureen Johnson in the U.S. national tour of Rent. Levy then played the role of Penny Pingleton in both the Broadway and U.S. national tour companies of Hairspray after understudying the role in the Toronto company. During this time, she also covered the role of Amber Von Tussle. In 2008, Levy starred as Elphaba in the Los Angeles sit-down production of Wicked. She had previously understudied the role on Broadway and briefly served as standby in Los Angeles. She next starred as Sheila in the Broadway revival of Hair in 20092010 at the Al Hirschfeld Theatre. She transferred to the West End revival in 2010 at the Gielgud Theatre.
Passage 2:Otto Ole Schnellbacher (April 15, 1923 March 10, 2008) was an American football defensive back in the National Football League for the New York Giants. He was a 2-time Pro Bowler. Also a professional basketball player, Schnellbacher played for the Basketball Association of America's Providence Steamrollers and St. Louis Bombers in 194849. In college, Schnellbacher was a two-sport star at the University of Kansas, earning him the nickname "the double threat from Sublette". On the gridiron, Schnellbacher, along with teammate Ray Evans, was KU's first football All-American in 1947. That same season, Schnellbacher led the Jayhawks to a Big 6 conference title and an Orange Bowl berth. Schnellbacher also excelled in basketball, where he was a four-time first-team all-conference selection (one of only three Jayhawks to do so). He was a member of the 1943 Big Six conference championship team (which also featured All-American teammates Charles B. Black and the aforementioned Ray Evans) that is regarded as one of the program's greatest teams.
Passage 3:A Military Shield detachment was present at the Palmyra frontline in December 2016, when ISIL launched a large-scale offensive in the area. This unit was later accused by the Tiger Forces to have fled in disarray after the first serious Islamist attacks, leaving Palmyra and Tadmor's remaining pro-government defenders to their fate. Soon after, Palmyra fell to ISIL, and the Military Security Shield Forces were among the pro-government units that sent reinforcements to help defend the nearby Tiyas Military Airbase from the next Islamist attack. The unit was also involved in the following government counter-offensive in the area. On 23 February 2017, al-Masdar News reported that over 900 Syrian Marines had joined the Military Security Shield Forces in order to avoid being drafted into the regular army. In June 2017, the Military Shield Forces took part in an anti-ISIL offensive in eastern Hama. Later that year, the militia took part in the battle to retake all of Deir ez-Zor city from ISIL. Afterwards, Military Shield militiamen began to garrison towns in eastern Syria which had been retaken from ISIL, such as Mayadin. The pro-opposition Syrian Observatory for Human Rights accused the militia of requisitioning food from local civilians during this time.
2