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: What is the full name for the enforcement body that arrested Ottwalt and his wife? Passage 1:In 1933, Ottwalt and his wife, Waltraut, left Germany and went into exile in Denmark, then, by way of Czechoslovakia, ended up in the Soviet Union. Living in Moscow, Ottwalt wrote for the German exile magazine Internationale Literatur (published by Johannes R. Becher) and was an editor at Vegaar Bibliothek. He also wrote for the Deutsche Zentral Zeitung. In 1936, he and his wife were ensnared in the Stalinist purges and arrested by the Soviet secret police, the NKVD. He was charged with suspicion of espionage, sentenced to forced labor and deported to a gulag near Archangelsk. His wife was sentenced to forced labor in Kotlas. She was deported back to Germany in January 1941 and didn't learn about his death until January 1958, when the Soviet Red Cross informed her that her husband had died on 24 August 1943.
 Passage 2:The earliest surviving written criticisms of Islam are to be found in the writings of Christians who came under the early dominion of the Islamic Caliphate. One such Christian was John of Damascus (c. 676–749 AD), who was familiar with Islam and Arabic. The second chapter of his book, The Fount of Wisdom, titled "Concerning Heresies", presents a series of discussions between Christians and Muslims. John claimed an Arian monk (whom he did not know was Bahira) influenced Muhammad and viewed the Islamic doctrines as nothing more than a hodgepodge culled from the Bible. Writing on Islam's claim of Abrahamic ancestry, John explained that the Arabs were called "Saracens" (Greek Σαρακενοί, Sarakenoi) because they were "empty" (κενός, kenos, in Greek) "of Sarah". They were called "Hagarenes" because they were "the descendants of the slave-girl Hagar".
 Passage 3:Freeh was born January 6, 1950, in Jersey City, New Jersey, the son of Italian-American parents Bernice (née Chinchiolo), a former bookkeeper, and William Freeh, Sr., a real estate broker. Freeh, a native of North Bergen, graduated from St. Joseph's High School in West New York, NJ in 1967, where he was taught by Christian Brothers. He then graduated Phi Beta Kappa from Rutgers University–New Brunswick with a Bachelor of Arts degree in 1971, and received a Juris Doctor degree from Rutgers School of Law–Newark in 1974 and a Master of Laws degree in criminal law from New York University School of Law in 1984. Freeh was an FBI Special Agent from 1975 to 1981 in the New York City field office and at FBI Headquarters in Washington, D.C. In 1981, he joined the U.S. Attorney's Office for the Southern District of New York as an Assistant United States Attorney. Subsequently, he held positions there as Chief of the Organized Crime Unit, Deputy United States Attorney, and Associate United States Attorney. He was also a first lieutenant in the United States Army Reserve.
1