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: In what year was the group that Laskov joined as a teenager formed? Passage 1:He was arrested on 3 August 1944 at the Gare Montparnasse, and questioned harshly by the Gestapo at the Rue des Saussaies. He lost consciousness under the beatings but did not divulge any names; he was subsequently held at Fresnes Prison. Debeaumarche was one of the so-called "77,000" (named for the prisoners' numbers, between 76,000 and 78,000), Fresnes prisoners who were transported by train from Pantin to Buchenwald on 15 August 1944. He was moved to the underground factory of Mittelbau-Dora which produced V-1 flying bombs and V-2 rockets, and posing as an electrical engineer was put to work in the manufacture of the V-1. Maurice Naegele, a Kapo in the tunnel assembly section, gained the trust of Debeaumarche by relating details of the resistance movement in France. In fact Naegele had been an agent of the Gestapo, before his deportation. Naegele denounced Debeaumarche to SS-Oberscharfuhrer Sander, head of surveillance at Mittelbau-Dora. Debeaumarche was arrested with others (including Naegele) on the night of 34 November 1944. They were taken to the Niedersachswerfen SD headquarters, where Naegele attempted to beat confessions out of the other prisoners. Debeaumarche was sentenced to death on 11 November 1944, but the sentence was not carried out. Instead Debeaumarche was held in solitary confinement, accused of anti-Nazi plotting. In April 1945 he was moved to Bergen-Belsen, where he was liberated during the advance of Allied troops on 15 April 1945 and repatriated to France. On 1 May 1945 he marched down the Champs-Elysees alongside fellow Buchenwald-captive Pierre Dejussieu-Pontcarral.
Passage 2:The 743d Bombardment Squadron was first activated at Alamogordo Army Air Field, New Mexico on 1 June 1943, one of the four squadrons of the 455th Bombardment Group. The initial cadre for the squadron was drawn from the 302d Bombardment Group. In July, a group cadre was given advanced tactical training by the Army Air Forces School of Applied Tactics at Orlando Army Air Base and Pinecastle Army Air Field, Florida. After organizing at Alamogordo, the squadron moved to Utah, where the ground echelon was stationed at Kearns Army Air Base, although flying operations were based at Salt Lake City Army Air Base. After completing training at Langley Field, Virginia, the squadron departed the United States for the Mediterranean Theater of Operations in December 1943. The air echelon began staging through Mitchel Field, New York to ferry their Liberators via the southern ferry route. The ground echelon sailed on the SS Charles Brantley Aycock.
Passage 3:Laskov joined the Haganah as a teenager, and served in various units, including Orde Wingate's Special Night Squads. He also served as a personal messenger for Yaakov Dori, who would later become the first Chief of Staff. In 1940, Laskov joined the British Army so that he could participate in World War II. He served in various capacities, and was a commander of the Jewish Brigade which saw action on the Italian front, eventually reaching the rank of major. After the war, he remained in Europe to participate in the Aliyah Bet illegal immigration effort to bring refugee Jews to Palestine. He also took part in various illicit acts of vengeance against the Nazis and their collaborators. Upon eventually returning to Palestine, he rejoined the Haganah, while also working as chief of security for the electric company.

Output:
3