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: Who had the longer tenure at the Rockefeller Institute, Emil L. Smith or Max Bergmann? Passage 1:Initially intending to go into medicine, Smith became interested in biology and organic chemistry during his second year at Columbia University. He earned a B.S. in 1931 and stayed at Columbia to study photosynthesis under Selig Hecht, completing a Ph.D. in biophysics in 1936. In 1938, he went to Cambridge University on a Guggenheim Fellowship to work with David Keilin on the chlorophyll-protein complex. Upon returning to the U.S. during World War II, he took a position at Yale University's Connecticut Agricultural Experiment Station to work with Hubert Bradford Vickery. He joined the lab of eminent protein chemist Max Bergmann at the Rockefeller Institute in 1940, where he worked with a number of important biochemists and began a significant line of research on the intestinal enzyme erepsin.
Passage 2:Born in Colne, Lancashire, Bracewell began his career in non-league football with Trawden. He then signed with league club Burnley, but never made a league appearance, and so made his professional debut with Tranmere Rovers in 1959, making 28 league appearances in two seasons. Bracewell then played non-league football with Nelson, and with Canadian side Toronto Italia, before returning to English league football with Norwich City. However, he didn't make a single appearance for Norwich, and soon signed for Lincoln City, where he made 23 league appearances between 1963 and 1965. After leaving Lincoln, Bracewell played non-league football with Margate, before signing with Bury, where he made 1 league appearance. Bracewell then spent two seasons in Canada with the Toronto Falcons, and returned briefly to England to play with Rochdale. Bracewell then returned to the NASL to play with the Atlanta Chiefs, the Atlanta Apollos and the Denver Dynamos.
Passage 3:In 1558 the alliance between the two kingdoms was finally revived with the marriage of Mary, Queen of Scots to the future Francis II of France, but only until 1560. After Mary's exile in 1568 to England, Scotland was transformed by its new king James VI, who was heir to the English throne as well as Scotland's, to a Protestant nation. His desire to form close links with England meant that the alliance had outlived its usefulness. In the 1560s, after more than 250 years, formal treaties between Scotland and France were officially ended by the Treaty of Edinburgh. With the Scottish Reformation, Scotland was declared Protestant, and allied itself with Protestant England instead. During the Reformation, the Protestant Lords of the Congregation had rejected the Auld Alliance and brokered English military support with their treaty of Berwick against the French Regent Mary of Guise. Two hundred Scottish soldiers were sent to Normandy in 1562 to aid the French Huguenots in their struggle against royal authority during the French Wars of Religion. The Garde Ecossaise, however, continued until 1830 when Charles X of France abdicated.

Output:
1