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: Who was the next to serve in the same role as Pro directly after his 1975 to 1978 tenure in the office?  Passage 1:Samuel was offered the chance to join Greenock Morton of the Scottish Championship on loan on transfer deadline day at the start of September 2015, an offer he stated he "knew straight away" that he wanted to take. He signed a four-month loan contract with Morton, with the deal running until January 2016. He made his Morton debut as a 78th-minute substitute for Romario Sabajo in a 4–2 away victory at Livingston on 5 September. Samuel became a regular in the first-team for Morton almost immediately, scoring his first two goals for the club in a 3–2 extra-time Scottish League Cup win over Motherwell at Cappielow in his fourth appearance for the club. His first goal in the match came courtesy of a sweeping effort in the first-half, before netting the winning goal in the 100th-minute with a first-time finish from a low cross. Samuel scored his first Scottish League goal in the Renfrewshire derby, scoring the equalising goal from close range in a 1–1 draw away at St Mirren on 20 November 2015. He added a fourth goal to his tally for the season on 18 December 2015 when he scored midway through the first half to briefly give Morton the lead in an eventual 2–1 home defeat to Raith Rovers. In January 2016, his loan deal was extended for the rest of the 2015–16 season. A month later, he briefly returned to Swansea to receive treatment after sustaining a knee injury in a Development League West match against Queen's Park. The injury ultimately ruled Samuel out of action for a month, before returning to the Morton first-team as a late substitute in a 3–2 win over Queen of the South on 15 March 2016. He went on to feature largely from the substitute's bench for the remainder of the season, making 30 appearances and scoring four goals in all competitions during his time at Morton, with the club finishing in fifth place in the Scottish Championship.
 Passage 2:Born in Richmond, California, Pro received an Associate of Arts degree from Contra Costa Community College in 1966, a Bachelor of Arts degree from San Francisco State University in 1968, and a Juris Doctor from Golden Gate University School of Law in 1972. He served in the United States Naval Reserve from 1964 to 1968. After serving as a law clerk to Judge William P. Compton of the Eighth Judicial District Court of Nevada from 1972 to 1973, Pro worked as a deputy public defender in Las Vegas, Nevada from 1973 to 1975. He was an Assistant United States Attorney in Las Vegas from 1975 to 1978. He was in private practice in Reno, Nevada from 1978 to 1979. He was a deputy state attorney general of Nevada from 1979 to 1980. He was the Chief Assistant United States Attorney in Reno in 1980. He served as a United States Magistrate Judge of the United States District Court for the District of Nevada from 1980 to 1987.
 Passage 3:He graduated from Yale College in 1808. He commenced a course of legal studies in the office of Hon. Lyman Law, of New London, but soon altered his plans. He then taught in the Academy at Plainfield, Conn., and there studied theology with Rev. Joel Benedict, D. D. He was licensed to preach by the New London County Association, Sept. 24, 1811, and supplied several congregations in Vermont and elsewhere. After about six months at the Andover Theological Seminary, in the class of 1814, he was ordained Pastor of the Presbyterian Church in Plattsburg, N. Y., July 5, 1815, and dismissed Oct. 2,1817, being driven southward by the severity of the climate. In Jan. 1818. he was installed over the First Congregational Church in Fairfield, Conn., as successor of Rev. Dr. Heman Humphrey. While in this charge, he became prominent as an able Temperance advocate, and in 1827 he labored extensively in behalf of the American Temperance Society, formed the year before in Boston. In Nov., he was appointed to a three years mission for this Society, and was accordingly dismissed from his pastorate, Dec. 18. His successful efforts during this time, well entitled him to be called the "Luther of the early Temperance Reformation." Dec. 1, 1830, he was installed over the Second Congregational Church in Bridgeport, Conn., a parish adjacent to his former one. The summer of 1831 was spent in England and Paris, on the errand of the Temperance Reform. In 1833, Dr. Hewit (he received the degree of D. D. from Amherst in 1830) was prominent among the founders of the East Windsor Theological Institute, now the Hartford Seminary. In 1853 a difference in his Society, in regard to the course to be taken in procuring assistance for the pastor, resulted in his withdrawal, and the formation of an Old School Presbyterian Church over which he was installed Oct. 31. Here he continued preaching until a colleague was settled, about five years ago.
2