Definition: 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 much larger were the improved German submarines? Passage 1:German Type IXD2 submarines were considerably larger than the original Type IXs. U-861 had a displacement of when at the surface and while submerged. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines plus two MWM RS34.5S six-cylinder four-stroke diesel engines for cruising, producing a total of for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to .
 Passage 2:Born in Cleckheaton, West Yorkshire, Strodder came through the youth system of Yorkshire Amateur. He joined Lincoln City in 1982, spending five years at the club and being voted the club's player of the year in 1986, before signing for West Ham United. After three years at West Ham, he moved on to West Bromwich Albion, who he helped to promotion via the playoff final at Wembley Stadium in a team managed by Argentinian and Tottenham Hotspur legend Ossie Ardiles. In 1996 he signed for Notts County, where he was selected for the Third Division PFA Team of the Year in 1997–98. In 1998–99 he had a spell on loan at Rotherham United, before joining Hartlepool United. In 2001 he dropped into non-League football with Guiseley. After retiring from playing he worked for the community development section at Leeds United, before going into business in Menorca.
 Passage 3:Initially, Nick Carter, aged 14 at the time, was unable to sing on the recording of the song as he was undergoing puberty. The remaining band members were brought over to Stockholm for a week to record "We've Got It Goin' On" in late December 1994. They unexpectedly finished the song in just two days and decided to record "Quit Playing Games (with My Heart)" immediately afterwards. The single was not the label's first choice to release for the group's US return, as they initially wanted to release the Mutt Lange-produced "If You Want It to Be Good Girl (Get Yourself a Bad Boy)", but the band argued against it, claiming that it was one of their worst songs. Jive president Barry Weiss claimed that the other serious contenders included "Anywhere for You" and "All I Have to Give". The group also wanted to reshoot the music video, but the label refused, arguing that they only planned to market towards radio, not video. The song ultimately succeeded without MTV support. The background vocals in the song, besides McLean's self-harmonization on the bridge, consisted of Brian Littrell and Kevin Richardson, who decided to finish the song while the remaining members were having lunch.

Output:
1