Detailed 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.
Q: Question: What age was Robert I the year the Battle of Bannockburn occurred? Passage 1:Federal and state agencies administer approximately , or 35 percent of Montana's land. The U.S. Department of Agriculture Forest Service administers of forest land in ten National Forests. There are approximately of wilderness in 12 separate wilderness areas that are part of the National Wilderness Preservation System established by the Wilderness Act of 1964. The U.S. Department of the Interior Bureau of Land Management controls of federal land. The U.S. Department of the Interior Fish and Wildlife Service administers of 1.1 million acres of National Wildlife Refuges and waterfowl production areas in Montana. The U.S. Department of the Interior Bureau of Reclamation administers approximately of land and water surface in the state. The Montana Department of Fish, Wildlife and Parks operates approximately of state parks and access points on the state's rivers and lakes. The Montana Department of Natural Resources and Conservation manages of School Trust Land ceded by the federal government under the Land Ordinance of 1785 to the state in 1889 when Montana was granted statehood. These lands are managed by the state for the benefit of public schools and institutions in the state.
 Passage 2:Edgar E. "Rip" Miller (June 1, 1901 – October 1, 1991) was an American football player, coach, and college athletics administrator. Miller played college football as a tackle at the University of Notre Dame from 1922 to 1924. He was a member of the "Seven Mules" line that blocked for the famous "Four Horsemen" backfield on Knute Rockne's national championship team of 1924. Miller served as the head football coach at the United States Naval Academy from 1931 to 1933, compiling a record of 12–15–2. After stepping down as head coach, he remained at Navy as line coach until 1947 and then was the assistant athletic director there from 1948 until his retirement in 1974. Miller was elected to the College Football Hall of Fame as a player in 1966. Five of his Notre Dame teammates are also enshrined in the Hall of Fame: fellow "Mule", Adam Walsh, and each of the "Four Horsemen", Harry Stuhldreher, Don Miller, Jim Crowley, and Elmer Layden.
 Passage 3:Scottish field armies rarely managed to stand up to the usually larger and more professional armies produced by England, but they were used to good effect by Robert I of Scotland at the Battle of Bannockburn in 1314 to secure Scottish independence. He adopted a policy of slighting castles and made use of naval power to support his forces, beginning to develop a royal Scottish naval force. In the Late Middle Ages under the Stewart kings these forces were further augmented by specialist troops, particularly men-at-arms and archers, hired by bonds of manrent, similar to English indentures of the same period. New "livery and maintenance" castles were built to house these troops and castles began to be adapted to accommodate gunpowder weapons. The Stewarts also adopted major innovations in continental warfare, such as longer pikes, the extensive use of artillery, and they built up a formidable navy. However, one of the best armed and largest Scottish armies ever assembled still met with defeat at the hands of an English army at the Battle of Flodden in 1513, which saw the destruction of a large number of ordinary troops, a large section of the nobility and King James IV.

A:
3