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: When did Christianity first come to Franconia? Passage 1:The Lookout Mountain Incline Railway is a inclined plane funicular railway leading to the top of Lookout Mountain from the historic St. Elmo neighborhood of Chattanooga, Tennessee. Passengers are transported from St. Elmo's Station at the base, to Point Park at the mountain summit, which overlooks the city and the Tennessee River. It is just a short drive to three of Chattanooga's main tourist attractions, Ruby Falls, Cavern Castle, and Rock City. The railway is approximately in length (single-track except for a short two-track passing loop at the midway point, allowing operation of two cars at one time). It has a maximum grade of 72.7%, making it one of the world's steepest passenger railways. It obtained Historic Mechanical Engineering Landmark status in 1991. The cable system for the cars was made by the Otis Elevator Company.
Passage 2:In 1007, Holy Roman Emperor Henry II made Bamberg a family inheritance, the seat of a separate diocese. The Emperor's purpose in this was to make the Diocese of Wurzburg less unwieldy in size and to give Christianity a firmer footing in the districts of Franconia, east of Bamberg. In 1008, after long negotiations with the Bishops of Wurzburg and Eichstatt, who were to cede portions of their dioceses, the boundaries of the new diocese were defined, and Pope John XVIII granted the papal confirmation in the same year. Henry II ordered the building of a new cathedral, which was consecrated 6 May 1012. The church was enriched with gifts from the pope, and Henry had it dedicated in honor of him. In 1017 Henry also founded Michaelsberg Abbey on the Michaelsberg ("Mount St. Michael"), near Bamberg, a Benedictine abbey for the training of the clergy. The emperor and his wife Kunigunde gave large temporal possessions to the new diocese, and it received many privileges out of which grew the secular power of the bishop. Pope Benedict VIII visited Bamberg in 1020 to meet Henry II for discussions concerning the Holy Roman Empire. While he was here he placed the diocese in direct dependence on the Holy See. He also personally consecrated some of Bamberg's churches. For a short time Bamberg was the centre of the Holy Roman Empire. Henry and Kunigunde were both buried in the cathedral.
Passage 3:East of Milford, US 50 becomes a two-lane highway as it travels through Hillsboro and Bainbridge before reaching the outskirts of Chillicothe. In Chillicothe, US 50 becomes Western Avenue and then Main Street before merging with U.S. Route 23 and U.S. Route 35 east of the city. State Route 104 overlaps US 50 through downtown Chillicothe. As US 50 leaves Chillicothe it becomes a two-lane highway once again as it winds its way through McArthur and heavy forested Southern Ohio before reaching the outskirts of Athens where it becomes a four-lane highway. It will remain four-lane until reaching the Ohio River. US 50 joins with State Route 32 near the Ohio University Bush AirportSnyder Field in Albany, west of Athens. US 50 intersects with U.S. Route 33 east of the city before continuing eastward toward Belpre and the Ohio River. US 50 begins to overlap SR 7 near Reedsville as it heads north along the river, and splits from SR 7 before it crosses the river on the Blennerhassett Island Bridge to Parkersburg, West Virginia.
2