Q: 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 graduated alongside him the year Organski earned his Ph.D from New York University? Passage 1:Elias entered the 1996 NFL season as the likely third down back for the 1996 team. In 1995 no one had emerged to replace Dave Meggett in that role. Elias again had strong preseason performances. In one early August exhibition game he scored two touchdowns. By August 22, he led the Giants in preseason carries. He entered the season as the first option third down back, ahead of Wheatley. In the September 30 contest against the Minnesota Vikings, John Randle picked fights with some of the Giants, including Elias. Elias suffered turf toe in that game and it affected him in the next as well. He also had an October ankle injury, which consisted of both a sprain and a bone chip. That injury kept him out of the lineup, making Wheatley the third down back by default. Elias did not get his third down role back until mid-November. When he finally returned to this role, he was able to perform as needed. However, he was soon suffering from a torn posterior cruciate ligament and a damaged meniscus in need of surgery and was lost for the season. He had immediate November surgery, which revealed that the ligament was 90% torn, but would heal on its own. It kept him out of the lineup for the rest of the season, however. He finished the season on injured reserve. During the offseason, he got involved as a narrator for the Westchester Philharmonic. As the Giants prepared for the 1997 NFL Draft they attempted to resign Elias.
 Passage 2:A.F.K. Organski was born in Rome, Italy. As a youth, he attended the Ginnasio Liceo Torquato Tasso. He went to the United States fleeing the anti-Jewish laws of the Benito Mussolini regime and later served with the American armed forces in the Pacific theater from 1943 to 1945. After World War II, he settled in New York City, where he became an American citizen in 1944 and earned his B.A. (1947), M.A. (1948), and Ph.D. (1951) degrees from New York University. In 1952 he started teaching at the Brooklyn College, moving in 1964 to the University of Michigan, where he became professor of political science and senior research scientist in the Institute for Social Research. He co-founded Decision Insights, a consulting firm focused on introducing scientific rigor to the execution of policy and decision making in government and business.
 Passage 3:Ellis was signed by the Leafs and played junior hockey with the Toronto Marlboros of the Ontario Hockey Association from 1961–1964. He played on the team that won the Memorial Cup in 1964. Ellis became a full-time Leaf in 1964–65 and played 11 seasons to 1974–75, winning the Stanley Cup in 1967. He was also a member of Team Canada at the 1972 Summit Series. Ellis retired at age 30 during training camp in 1975, coming off the most productive season of his career with 61 points. He said he no longer had the desire to play and denied that his decision had anything to do with being passed over as team captain in favour of Darryl Sittler a month earlier. In 1977, Ellis came out of retirement to play for Canada at the world hockey championships and then decided to resume his NHL career with the Leafs in 1977–78.

A:
2