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 MacArthur the day that the San Francisco Peace Treaty was signed? Passage 1:The Allied occupation of Japan at the end of World War II was led by General Douglas MacArthur, the Supreme Commander of the Allied Powers, with support from the British Commonwealth. Unlike in the occupation of Germany, the Soviet Union was allowed little to no influence over Japan. This foreign presence marks the only time in Japan's history that it has been occupied by a foreign power. At MacArthur's insistence, Emperor Hirohito remained on the imperial throne. The wartime cabinet was replaced with a cabinet acceptable to the Allies and committed to implementing the terms of the Potsdam Declaration, which among other things called for the country to become a parliamentary democracy. Under MacArthur's guidance, the Japanese government introduced sweeping social reforms and implemented economic reforms that recalled American "New Deal" priorities of the 1930s under President Roosevelt. The Japanese constitution was comprehensively overhauled and the Emperor's theoretically-vast powers, which for many centuries had been constrained by conventions that had evolved over time, became strictly limited by law. The occupation, codenamed Operation Blacklist, was ended by the San Francisco Peace Treaty, signed on September 8, 1951, and effective from April 28, 1952, after which Japan's sovereigntywith the exception, until 1972, of the Ryukyu Islands was fully restored.
 Passage 2:Dixon attended the College of William and Mary before signing with the Boston Red Sox farm system in as a right-handed pitcher. Despite losing three seasons (1943–45) to military service during World War II, Dixon progressed as far as the Scranton Red Sox of the Class A Eastern League before his release by the Red Sox at the end of the campaign. When he returned to the game in he pitched for unaffiliated clubs in the mid-minors until he became predominantly an outfielder and first baseman in . That season — also his first as a manager — Dixon batted .368 for the Shelby Farmers of the Class D Western Carolina League. His best minor league season, however, would come in when, as the manager and first baseman of the Norton Braves of the Class D Mountain States League, he led the loop in home runs (37) and hits (194), while batting .415 and driving home 162 RBI. Incredibly, Dixon did not lead the MSL in RBI or batting, finishing behind Willie Kirkland (164 RBI) and Leo "Muscle" Shoals (.427).
 Passage 3:Between 1946 and 1950, Walsh made 11 appearances and scored seven goals for the IFA XI. These include two Victory internationals played in early 1946. On 2 February, at Windsor Park he made his debut for the IFA XI in a 3–2 defeat to Scotland, scoring both of his teams goals. Then, on 4 May, he helped the IFA XI defeat Wales 1–0 at Ninian Park. On 27 November 1946, he played for the IFA XI a 0–0 draw with Scotland. Together with Johnny Carey, Con Martin, Bill Gorman, Tommy Eglington, Alex Stevenson and Peter Farrell, he was one of seven players born in the Irish Free State to play for the IFA XI that day. The draw helped the team finish as runners-up in the 1947 British Home Championship. Walsh also helped the IFA XI gain some further respectable results, including a 2–0 win against Scotland on 4 October 1947 and a 2–2 draw with England at Goodison Park on 5 November 1947. It was at Goodison that Walsh scored his third goal for the IFA XI, in a game he was later to describe as the highlight of his footballing career.

A:
1