Q: 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.
Question: How many people attended the conference held near Berlin in January 1942? Passage 1:Following the invasion of Poland in 1939 most of the 3.5 million Polish Jews were rounded up and put into newly established ghettos by Nazi Germany. The system was intended to isolate the Jews from the outside world in order to facilitate their exploitation and abuse. The supply of food was inadequate, living conditions were cramped and unsanitary, and the Jews had no way to earn money. Malnutrition and lack of medicine led to soaring mortality rates. In 1941, the initial victories of the Wehrmacht over the Soviet Union inspired plans for the German colonisation of occupied Poland, including all territory within the new district of General Government. At the Wannsee Conference held near Berlin on 20 January 1942, new plans were outlined for the genocide of the Jews, known as the "Final Solution" to the Jewish Question. The extermination programme was codenamed Aktion Reinhard in German, to differentiate it from the Einsatzgruppen mass killing operations in territories conquered by Nazi Germany, in which half a million Jews had already been annihilated.
 Passage 2:In January 2010, Sergei Ratnikov was appointed as manager. Tallinna Kalev won the 2011 Esiliiga were promoted back to the Meistriliiga. The club finished the 2012 season in ninth place, but avoided being relegated by defeating Tarvas 3–1 on aggregate in the relegation play-offs. In December 2012, Frank Bernhardt was appointed as manager. Tallinna Kalev finished the 2013 season in eighth place. In January 2014, former Estonia national team manager Tarmo Rüütli took over as manager. Rüütli subsequently left in March 2014 and Sergei Zamogilnõi took over as manager. Following a disappointing 2014 season, where Tallinna Kalev finished in 10th place and were relegated to the Esiliiga once again, Zamogilnõi was replaced by Marko Pärnpuu. Tallinna Kalev returned to the Meistriliiga after finishing the 2017 season as runners-up. In November 2017, Pärnupuu was replaced by Argo Arbeiter. The team finished the 2018 season in eighth place, after which Arbeiter left and Aleksandr Dmitrijev took over as manager.
 Passage 3:Joergen Bech, who previously worked as a developer at Innerprise Software during 1990, decided to work once again as a game programmer after dropping out of international marketing studies in 1994 and landed for the job by one of his contacts who had connection with an employee at Bethesda Softworks, who are best known for The Elder Scrolls and their most recent Fallout titles. Bethesda was interested in expanding their business to video game consoles and Joergen was hired for work on the Jaguar, due to the company receiving free Alpine Development Kits from Atari Corporation and for its superior hardware compared with other systems at the time such as the Sega Genesis and Super NES. Originally he was tasked in making a conversion of a basketball game from PC but decided to create a 2D title in order to understand the Jaguar's hardware, along with another programmer who already was familiarized with the system, after Joergen deemed the PC basketball game as a "steep learning curve" to convert, due to it being in pseudo-3D and being written on C language, which he had little to no experience with them and it was then decided that he should port Protector to Genesis, which was a conversion of Datastorm for Amiga alongside with the original authors of the game at Bethesda's Media Technology division on Denmark, with him providing the sound driver for the port, but otherwise he was not fully involved with the project and although completed it was ultimately never published due to many console, PC and multimedia titles competing for shelf space, with no prototypes of the Genesis version of Protector being found to date.

A:
1