Question: Between  U2 and Dead Sara which group has more main members?

Context paragraphs:
Fourth Reich (New Zealand gang): The Fourth Reich was a skinhead gang originally formed in a Christchurch prison, as various skinhead prisoners, came and went, doing their time.  There was around 22 main members, they did not all know each other, they had never been all in the same room, at one time.  (Due to the Gang being predominantly more a prison group) and associates, female partners, considered all part of the wider Fourth Reich group.  Their members came from Christchurch, Dunedin and the West Coast of the South Island of New Zealand formed in 1994.

Dead Sara: Dead Sara is an American hard rock band from Los Angeles, consisting of Emily Armstrong (lead vocals, rhythm guitar), Siouxsie Medley (lead guitar, backing vocals), Sean Friday (drums, backing vocals) and Chris Null (bass guitar, backing vocals) currently best known for their single "Weatherman" from their debut eponymous album "Dead Sara" (2012).

Siouxsie Medley: Siouxsie Medley, born and raised in Los Angeles, is a musician, artist and actress.  Medley is best known as the guitarist for Dead Sara, a rock band she started at age 15 with her friend Emily Armstrong, who was 16.

Tokyo Performance Doll: Tokyo Performance Doll also known as TPD (東京パフォーマンスドール) is a J-pop idol girl group that existed from 1990 to 1996 and was revived in 2013.  Inspired by Onyanko Club, it had seven main members and several other "trainees" for live performances, a formula later followed by Morning Musume, Hello!  Project and AKB48.  TPD was based in Tokyo, and launched sister-bands in other cities: Osaka Performance Doll in 1993 and Shanghai Performance Doll in 1996.  TPD had numerous sub-groups that issued their own singles, while albums were issued collectively.  Among TPD's main members were Ryoko Shinohara and East End X Yuri's Yuri Ichii.  Trainee members included Yoko Kamon and Yuko Fueki (Yoo Min).  In June 2013, it was announced that after 17 years, the group was being revived with an all new line up.

U2: U2 are an Irish rock band from Dublin formed in 1976.  The group consists of Bono (lead vocals and rhythm guitar), the Edge (lead guitar, keyboards, and backing vocals), Adam Clayton (bass guitar), and Larry Mullen Jr. (drums and percussion).  Initially rooted in post-punk, U2's musical style evolved throughout their career, yet has maintained an anthemic sound built on Bono's expressive vocals and the Edge's effects-based guitar textures.  Their lyrics, often embellished with spiritual imagery, focus on personal and sociopolitical themes.  Popular for their live performances, the group have staged several ambitious and elaborate tours over their career.

Dead Sara (album): Dead Sara is the self-titled debut album by American rock band Dead Sara.  It was released on April 10, 2012 by the band's own Pocket Kid Records and produced by Noah Shain.  The album was critically acclaimed and reached number 16 on "Billboard"' s Heatseekers Albums chart.  Its single "Weatherman" reached number 30 on the Mainstream Rock chart, 31 on Hot Rock Songs and 35 on Alternative Songs.

Archigram: Archigram was an avant-garde architectural group formed in the 1960s - based at the Architectural Association, London - that was neofuturistic, anti-heroic and pro-consumerist, drawing inspiration from technology in order to create a new reality that was solely expressed through hypothetical projects.  The main members of the group were Peter Cook, Warren Chalk, Ron Herron, Dennis Crompton, Michael Webb and David Greene.  Designer Theo Crosby was the "hidden hand" behind the group.  He gave them coverage in "Architectural Design" magazine (where he was an editor from 1953–62), brought them to the attention of the Institute of Contemporary Arts (ICA) in London, where, in 1963, they mounted an exhibition called "Living Cities", and in 1964 brought them into the Taylor Woodrow Design Group, which he headed, to take on experimental projects.  The pamphlet "Archigram I" was printed in 1961 to proclaim their ideas.  Committed to a 'high tech', light weight, infra-structural approach that was focused towards survival technology, the group experimented with modular technology, mobility through the environment, space capsules and mass-consumer imagery.  Their works offered a seductive vision of a glamorous future machine age; however, social and environmental issues were left unaddressed.

Arrows of Love: Arrows of Love is a London-based musical group based around the songwriting and performance styles of creative partners Nima Teranchi & Nuha Ruby Ra.  The wider group resembles something akin to a collective, with members swapping in and out for various tours and shows, adding to its nature as a constantly evolving force, and threaded together by the fiercely energetic live shows and inventive songwriting which are the trademark of its main members.

Baader Meinhof (album): Baader Meinhof is a 1996 album by Luke Haines, under the pseudonym Baader Meinhof.  The name was given after two of the main members of the Red Army Faction, Andreas Baader and Ulrike Meinhof, and the album, composed of 10 tracks, tells the history of group, since the ideas that might have inspired the group (in the first track, there's a quote from the student movement leader Rudi Dutschke: "Rudi said 'we got to be wise and we got to get armed'"), their first actions ("Burn Warehouse Burn"), their travel to Jordan ("Meet Me at the Airport"), their capture, the hijacking of a Lufthansa airplane by the members of the "second generation" of the RAF, in 1977 (one of the events that marked the German Autumn) ("Mogadishu").  In 2014, British independent record label 3 Loop Music re-released the album on heavyweight 180gsm vinyl and as an Expanded CD Edition which included four remixes from a previously unreleased EP.

Noah Shain: Noah Shain is an American record producer and musician.  Shain was dubbed "one of the most prominent young producers in the United States by Mute Magazine."  He notably produced early work by Grammy award winning Skrillex "Sonny Moore," as well as albums by As tall as lions Jordan Zevon, Atreyu, The Chevin, and Dead Sara.

Supporting paragraphs: U2 Dead Sara
Answer: Dead Sara