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: How many years passed from the end of World War II and the date that the USSR tested their first nuclear weapon? Passage 1:In the immediate aftermath of World War II, the leadership of the Soviet Union feared the United States would use its nuclear superiority to its advantage, as from 1945 to 1948 the U.S. was the only state possessing nuclear weapons. The USSR countered by rapidly developing their own nuclear weapons, surprising the US with their first test in 1949. In turn, the U.S. countered by developing the vastly more powerful thermonuclear weapon, testing their first hydrogen bomb in 1952 at Ivy Mike, but the USSR quickly countered by testing their own thermonuclear weapons, with a test in 1953 of a semi-thermonuclear weapon of the Sloika design, and in 1956, with the testing of Sakharov's Third Idea – equivalent to the Castle Bravo device. Meanwhile, tensions between the two nations rose as 1956 saw the suppression of Hungary by the Soviets; the U.S. and European nations drew certain conclusions from that event, while in the U.S., a powerful social backlash was afoot, prompted by Senator Joseph McCarthy, the House Un-American Activities Committee, and Julius and Ethel Rosenberg, U.S. citizens executed in 1953 after conviction of espionage. This atmosphere was further inflamed by the 1957 launch of Sputnik, which led to fears of Communists attacking from outer space, as well as concerns that if the Soviets could launch a device into orbit, they could equally cause a device to re-enter the atmosphere and impact any part of the planet. John F. Kennedy capitalized on this situation by emphasizing the Bomber gap and the Missile gap, areas in which the Soviets were (inaccurately) perceived as leading the United States, while heated Soviet rhetoric added to political pressure. The 1960 U-2 incident, involving Francis Gary Powers, as well as the Berlin Crisis, along with the test of the Tsar Bomba, escalated tensions still further.
 Passage 2:Trigarta was a kingdom mentioned in the epic Mahabharata. Mahabharata mentions two different Trigarta kingdoms, one in the west close to the Sivi Kingdom and the other north to the Kuru Kingdom. Modern Kangra is one of the ancient town in North Trigarta, extending westward to the Punjab area. Multan was the capital of Trigarta with its original name that is Mulasthan. The territory of Trigarta Kingdom is around the three rivers of Satluj, Beas, and Ravi. These Trigarta kings were allies of Duryodhana and enemies of Pandavas and Viratas. Their capital was named Prasthala. They attacked the Virata Kingdom aided by the Kurus to steal cattle from there. The Pandavas living there in anonymity helped the Viratas to resist the combined forces of Trigartas and Kurus. Trigarta kings fought the Kurukshetra War and were killed by Arjuna, after a ruthless and bloody conflict. Arjuna also annihilated an Akshouhini (a large military unit) of Trigarta warriors called the Samsaptakas. These warriors had vowed to either die or kill Arjuna as part of a larger plan by Duryodhana to capture Yudhishthira alive.
 Passage 3:In 1964 he moved to Santa Monica, California, and formed Rising Sons with fellow blues rock musician Ry Cooder and Jessie Lee Kincaid, landing a record deal with Columbia Records soon after. The group was one of the first interracial bands of the period, which likely made them commercially unviable. An album was never released (though a single was) and the band soon broke up, though Legacy Records did release The Rising Sons Featuring Taj Mahal and Ry Cooder in 1992 with material from that period. During this time Mahal was working with others, musicians like Howlin' Wolf, Buddy Guy, Lightnin' Hopkins, and Muddy Waters. Mahal stayed with Columbia after the Rising Sons to begin his solo career, releasing the self-titled Taj Mahal in 1968, The Natch'l Blues in 1969, and Giant Step/De Old Folks at Home with Kiowa session musician Jesse Ed Davis from Oklahoma, who played guitar and piano (also in 1969). During this time he and Cooder worked with the Rolling Stones, with whom he has performed at various times throughout his career. In 1968, he performed in the film The Rolling Stones Rock and Roll Circus. He recorded a total of twelve albums for Columbia from the late 1960s into the 1970s. His work of the 1970s was especially important, in that his releases began incorporating West Indian and Caribbean music, jazz and reggae into the mix. In 1972, he acted in and wrote the film score for the movie Sounder, which starred Cicely Tyson. He reprised his role and returned as composer in the sequel, Part 2, Sounder.

Output:
1