Instructions: 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: Which of the episodes featuring Malohkek aired first? Passage 1:Chibnall suggested including a "bonkers" gang of characters picked from around time and space. He felt that Doctor Who could have "collisions of characters that no other show in the world can do", and that it was about finding a "disparate" group of characters who would "bounce" off each other. Nefertiti's decision not to return to her own time fits in with the historical record, as the date and cause of her death are unknown. Chibnall asked to introduce Rory's father, as Amy and Rory would be leaving in four episodes and Rory's family life had not been explored yet. Mark Williams who played Rory's father previously appeared in the Fifth Doctor audio adventure The Eternal Summer. Rupert Graves, who played an Edwardian hunter in this episode, previously worked with Moffat on the BBC series Sherlock. David Bradley's character, Solomon, was modelled on a "well-known nightclub owner with long hair". Chibnall described him as "half businessman, half Somali pirate". Bradley and Williams had previously worked together on the Harry Potter film franchise. Bradley was later cast as the First Doctor William Hartnell for the 50th anniversary documentary drama An Adventure in Space and Time. Comedy duo Mitchell and Webb provided the voices of Solomon's two robots; executive producer Caroline Skinner called the casting choice "perfect". Richard Hope, who played the Silurian Bleytal, previously appeared as Malohkeh in the episodes "The Hungry Earth", "Cold Blood" and "The Wedding of River Song".
 Passage 2:Arthur Aloysius O'Leary was born on September 27, 1887, in Washington, D.C. His father was a worker on the Baltimore and Ohio Railroad. He was educated at Gonzaga College, and his parish was the adjacent St. Aloysius Church. He entered the Society of Jesus on August 14, 1903, and was sent to St. Andrew-on-Hudson in New York for his scholasticate. He then completed his studies at Woodstock College in Maryland, where he earned a Doctor of Philosophy. He went to Georgetown University in 1912, as a professor of philosophy, holding the position until 1916. At the same time, he was also spiritual director for the university. He was finally ordained a priest in 1919, becoming a member of the first class of priests ordained at Georgetown. He then returned to St. Andrew-on-Hudson, where he taught for several years.
 Passage 3:Vicelinus was called to Bremen to act as teacher and principal of the school, and was offered a canonry by Archbishop Frederick of the Archbishopric of Hamburg-Bremen. In 1122 he may have gone to Laon to complete his studies under Abelard. In 1126, Vicelinus decided to travel to Madgeburg, in order to see St. Norbert, who at that time was the archbishop. He hoped that St. Norbert would ordain him a priest and he could begin missionary work among the Slavs. For one reason or another this plan failed and so Vicelinus returned to Bremen, where Bishop Albero ordained him. Hamburg-Bremen's Archbishop Adalbero sent him among the Polabian Slavs, and in the fall of 1126 Henry, Prince of the Obotrites, gave him a church in Liubice, near the site of the later Lübeck. At the death of Henry (22 March 1127) Vicelinus returned to Bremen, and was appointed pastor at Wippenthorp. This gave him an opportunity to work among the Wagrians and neighbouring Obotrites.

Output:
1