Given the task definition and input, reply with output. 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: In which country was Sergey's family once royalty? Passage 1:Elphin has historically been an important market town and the diocesan centre for the Diocese of Elphin. St Patrick is believed to have visited Elphin, consecrated its first church and ordained its first bishop, Asicus (subsequently the patron saint of Elphin). Information supporting the visitation of St Patrick is to be found in two important memorials of early Irish hagiography, the Vita Tripartita of St Patrick, and the "Patrician Documents" in the Book of Armagh. On his missionary tour through Connacht in 434 or 435, St Patrick came to the territory of Corcoghlan, present day Elphin. The chief of that territory, a noble Druid named Ono, gave land and afterwards his castle or fort to St Patrick to found a church and monastery. The place, which had hitherto been called Emlagh-Ono (a derivation of its owners name) received the designation of Ail Finn, which means "rock of the clear spring". It derives from a story of St Patrick raising a large stone from a well opened by him in the land of Ono and placed on its margin. A copious stream of crystal water flowed from the well and continues to flow through Elphin to this day. St Patrick built a church called Tempull Phadruig (Patrick's church) and established an Episcopal See in Elphin. St Asicus remained as bishop of Elphin. St Patrick also founded an episcopal monastery or college at Elphin, believed to be one of the first monasteries founded by him. In pre-Reformation times, Elphin was host to a large number of religious orders and was a religious centre of international significance. This is supported by the appearance of Elphin in a number of pan-European maps in the Middle Ages. 
 Passage 2:Born in 1909 in the family of Orthodox princes Obolensky, from 1925 in exile in France, where, together with his father Nikolai Leonidovich Obolensky adopted Catholicism. He went to the Benedictines, where studied philosophy, and in 1943 he defended his doctoral degree from Pontifical Atheneum of St. Anselm in Rome. From 1935 he studied at Russicum. Ordained priest in 1940, Obolensky was sent to Paris, where he taught at Saint George Boarding in Meudon. He was also a member of the Congress of Russian Catholics in 1950 in Rome. Obolensky taught courses on the history of Russian literature and philosophy in Rome, Meudon and Bergamo. He worked as an expert on the Soviet Union in NATO. He was also author of books on the Soviet economy, translated the correspondence of Joseph Stalin, Franklin Roosevelt and Winston Churchill, and the memoirs of Georgy Zhukov and was engaged in the Soviet dissident literature. He died in 1992 in Belgium, the home of his sister.
 Passage 3:On 22 June 2018, Miller signed for League Two club Port Vale on a two-year contract for an undisclosed fee. Manager Neil Aspin had previously tried to sign him at F.C. Halifax Town and Gateshead. He was unable to play in the club's 2018–19 pre-season friendlies because of an unresolved disciplinary issue with The Football Association. He scored a goal and won a penalty on his debut on the opening day of the new season on 4 August, helping the "Valiants" to record a 3–0 victory over Cambridge United at Vale Park. His strike – a direct free-kick which he also won himself – was listed in the Daily Mail as the League Two goal of the weekend. However he was dropped after failing to score in the rest of the month, though impressed coach Lee Nogan with his performances off the bench, who said Miller just needed to rebuild his confidence following the goal drought. Aspin then switched to a 3–4–3 / 5–4–1 formation, leaving Miller to compete with Ben Whitfield for a place at wide midfield. Miller fell out of first-team contention by November, leaving Aspin to comment that "you have to be perfectly honest, he has not done the job at the moment that I brought him to do and, like I say, he has to do better." He was recalled to the first-team on 19 January, following an injury to Tom Pope, and scored his second league goal for the club to secure a 1–0 win at Crawley Town. However he was shown a straight red card in a 1–0 home defeat to Carlisle United seven days later. An injury to Pope saw new manager John Askey return Miller to the starting eleven on 9 March, and he doubled his league tally for the season with both Vale goals in a 2–1 win over promotion-chasing Mansfield Town; his performance saw him named on the EFL team of the week. He ended the campaign with six goals in 22 starts and 13 substitute appearances. His contract was terminated by mutual consent on 27 June, and the club refused to comment on the reasons behind his departure. Miller wrote on Twitter that he was "Sorry I didn't fulfill my potential but I've found the last two years very difficult. I hope I leave you with some good memories."
2