Definition: 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.
Input: Question: Which Burmese leader who were involved in the 1962 coup d'etat is the oldest? Passage 1:Born in Berlin to very poor parents, Herz was destined for a mercantile career, and in 1762 went to Königsberg, East Prussia. He soon gave up his position as clerk and attended the University of Königsberg, becoming a pupil of Immanuel Kant, but was obliged to discontinue his studies for want of means. He thereupon became secretary to the wealthy Russian Ephraim, traveling with him through the Baltic Provinces. On August 21, 1770, he traveled from Berlin and acted as respondent when Kant presented his Inaugural dissertation at the University of Königsberg for the post of ordinary professor. In 1770 he had returned to Germany and studied medicine in Halle, where he became an MD in 1774, in which year he established himself in Berlin, being appointed physician at the Jewish hospital. Beginning in 1777, he delivered public lectures on medicine and philosophy, which were well attended by the students and the principal personages of the Prussian capital. At some of them even members of the royal family were present.
 Passage 2:From 1916 to 1922, Thomson served on the Seattle city council, while continuing to work as a civil engineer. After leaving the council, he continued working various places in the Pacific Northwest and Alaska. He consulted on Oregon's Rogue River Valley Irrigation Canal; built hydroelectric plants in Eugene, Oregon and surveyed plant sites in Southeastern Alaska; planned the water supply of Bellingham, Washington and consulted on the system for Wenatchee; briefly, in his seventies, he returned, temporarily, as Seattle city engineer in 1930 to finish the Diablo Dam on the Skagit River after the death of city engineer William D. Barkhuff; consulted to the Inter-County River Improvement Commission for King and Pierce Counties (the counties containing Seattle and Tacoma, respectively), and consulted on the construction of the Lake Washington Floating Bridge (now Lacey V. Murrow Memorial Bridge, carrying Interstate 90 across Lake Washington) and for the foundations of the Tacoma Narrows Bridge.
 Passage 3:The Burmese Way to Socialism (; also known as the Burmese Road to Socialism) refers to the ideology of the socialist government in Burma, from 1962 to 1988, when the 1962 coup d'état was led by Ne Win and the military to remove U Nu from power. More specifically, the Burmese Way to Socialism is an economic treatise written in April 1962 by the Revolutionary Council, shortly after the coup, as a blueprint for economic development, reducing foreign influence in Burma and increasing the role of the military. The military coup led by Ne Win and the Revolutionary Council in 1962 was done under the pretext of economic, religious and political crises in the country, particularly the issue of federalism and the right of Burmese states to secede from the Union.

Output:
3