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: How many cast members did Line of Duty when it premiered on BBC2? Passage 1:The music for the film was composed by Barry De Vorzon and Perry Botkin Jr.. Their score for the movie included an instrumental selection titled "Cotton's Dream", which was later rescored to become the theme song of the soap opera The Young and the Restless; this was produced by Columbia's television division, now Sony Pictures Television. The soundtrack for the film also includes the movie's theme song, performed by The Carpenters. In late July or early August 1976, when ABC's sports summary program Wide World of Sports produced a montage of Romanian gymnast Nadia Comăneci's routines during the 1976 Summer Olympics and used "Cotton's Dream" as the background music, the song gained more popularity and was subsequently released in a re-edited and lengthened form as "Nadia's Theme", a title under which it became best known. (Comăneci herself never performed her floor exercises using this piece of music, however.) De Vorzon and Botkin Jr. also wrote lyrics for "Cotton's Dream" but no vocal version of it was known to have charted .
 Passage 2:He was by far the brightest performer as Bengal (captained by Sourav Ganguly) won its first Vijay Hazare Trophy in 2012. In the group stage match against Jharkhand at Eden Gardens, he scored 151* from 96 balls (16 fours, 8 sixes) to chase down Jharkhand's score of 280/6 in just 38.1 overs. In the next match against Tripura at the Jadavpur University Sports Complex, after being bowled out to only 198 in 49 overs, he took 4/37 (and Sanjib Sanyal took 4/33 from his 8 overs) to bowl out Tripura for just 168 in 37.4 overs. In the quarter final, he took 2/37 against Madhya Pradesh. He took the wicket of Punjab's highest scorer Mandeep Singh (66) in the semifinal. In the final against Mumbai led by Ajit Agarkar, he took 4/38 (including openers Wasim Jaffer and Ajinkya Rahane) to bowl out Mumbai for only 248, and then chased it down with a 107* off 83 ball-partnership with Anustup Majumdar. He scored 106* from 90 balls, and Anustup Majumdar scored 50* from 45 balls to win the Vijay Hazare Trophy with 23 balls to spare.
 Passage 3:Mercurio's next original drama series, Line of Duty (first broadcast 26 June 2012), premiered as BBC2's then best-performing drama series in 10 years with 4.1 million viewers. A well-received second series (first broadcast 12 February 2014) resulted in the BBC commissioning two further series for production in 2015 and 2016. The first series was nominated for a Royal Television Society Award for Best Drama Series and earned Mercurio his third nominations as Best Drama Writer by the Royal Television Society and The Writers' Guild of Great Britain. In 2014, Line of Duty was named in the Top 50 BBC2 Shows of All-Time, and named best television drama of the year by The Observer, and in 2016 ranked among the best BBC shows of all time and among the best police series of all time. In 2015, the second series won the Royal Television Society Award for Best Drama Series. and was nominated for four BAFTA Awards. Series 3 of Line of Duty became the most watched drama series broadcast on BBC2 in the multichannel era. Series 4 transferred to BBC One, consisting of six episodes broadcast from 26 March 2017.

Output:
3