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 does the abbreviation that the organization uses which Nachman Dushanski was hired by in June 1940 stand for? Passage 1:Dushanki's father was blinded during World War I and could not provide for the large family. Therefore, after graduating from the 6th grade, Dushanski began working. This early exposure to manual labor pushed him into communism–socialism and, in 1934, he joined the illegal Lithuanian branch of the Komsomol (Communist Union of Youth) and helped distributing underground communist publications. For such communist activities he was arrested in June 1936. First, he was jailed in a juvenile prison; later he was transferred to prisons in Šiauliai and Raseiniai. While in prison, Dushanski joined the Lithuanian Communist Party in 1938. He was released when Soviet Union occupied Lithuania in June 1940 and was given a job as an assistant security officer at the NKVD office in Telšiai. His duties included securing the Soviet Union – Nazi Germany border. He was involved in mass arrests of the "enemies of the people" and the June deportation. Conflicting witnesses testimony implicated Dushanski in the Rainiai massacre, one of the many NKVD prisoner massacres at the beginning of the German invasion of the Soviet Union. According to Dushanski, at the time he was returning from a vacation in Crimea and was attempting to evacuate his family from Šiauliai into Russia. However, the train did not leave the station and his parents and three siblings perished during the Holocaust; only his brother Jacob survived.
 Passage 2:The House of Lancaster was the name of two cadet branches of the royal House of Plantagenet. The first house was created when Henry III of England created the Earldom of Lancasterfrom which the house was namedfor his second son Edmund Crouchback in 1267. Edmund had already been created Earl of Leicester in 1265 and was granted the lands and privileges of Simon de Montfort, 6th Earl of Leicester, after de Montfort's death and attainder at the end of the Second Barons' War. When Edmund's son Thomas, 2nd Earl of Lancaster, inherited his father-in-law's estates and title of Earl of Lincoln he became at a stroke the most powerful nobleman in England, with lands throughout the kingdom and the ability to raise vast private armies to wield power at national and local levels. This brought himand Henry, his younger brotherinto conflict with their cousin Edward II of England, leading to Thomas's execution. Henry inherited Thomas's titles and he and his son, who was also called Henry, gave loyal service to Edward's sonEdward III of England.
 Passage 3:The caucus of Republican State legislators met on January 13, State Senator Dennis McCarthy presided. All but one of the legislators were present, only State Senator Edward M. Madden (13th D.) was absent. The caucus nominated Ex-Congressman Thomas C. Platt for the U.S. Senate. Platt was a friend of the other U.S. Senator from New York, Roscoe Conkling, and belonged to the Stalwart faction. The opposing Half-Breeds (in the press sometimes referred to as the "anti-machine men") at first wanted to nominate Chauncey M. Depew, but he withdrew before balloting. The majority of the Half-Breeds, led by President pro tempore of the State Senate William H. Robertson, then supported Platt, a minority voted for Sherman S. Rogers, the defeated Republican candidate for Lieutenant Governor of New York in 1876. Congressman Richard Crowley was supported by a faction led by Speaker of the State Assembly George H. Sharpe, allied with Governor Alonzo B. Cornell. U.S. Vice President William A. Wheeler, and Congressmen Elbridge G. Lapham and Levi P. Morton also received votes.

A:
1