Question: Which of the following bands is a side project of John Flansburgh, one of the founding members of They Might Be Giants: Mono Puff or Sum 41?

full_context: Document 1: Don't Call It a Sum-Back Tour: The Don't Call It a Sum-Back is a concert tour by Canadian pop punk band Sum 41. The tour, announced on August 8, 2016, will start October 5 and conclude on November 6. The tour will support Sum 41's sixth studio album, "13 Voices". In March 2016, the band announced that they will play in Warped Tour 2016. The post-hardcore band Senses Fail and British pop punk band As It Is will perform as well. On October 10 they announced UK dates starting on February 24 at Birmingham O2 Academy and finishing October 6 at Southampton O2 Guildhall.
Document 2: Nickelback: Nickelback is a Canadian rock band formed in 1995 in Hanna, Alberta, Canada. The band is composed of guitarist and lead vocalist Chad Kroeger, guitarist, keyboardist and backing vocalist Ryan Peake, bassist Mike Kroeger, and drummer Daniel Adair. The band went through a few drummer changes between 1995 and 2005, achieving its current lineup when Adair replaced drummer Ryan Vikedal.
Document 3: Mono Puff: Mono Puff is a New York City-based band and a side project of John Flansburgh, one of the founding members of They Might Be Giants.
Document 4: John Monte: John Monte is the bassist for Evan Seinfeld's new band, The Spyderz. He was a bassist for M.O.D., Mind Funk, Ministry, Human Waste Project and a guitarist for Dragpipe and Handful Of Dust. John can often be seen at Lakeland Baseball Academy in Lakeland, Florida.
Document 5: Rush (band): Rush is a Canadian rock band composed of Geddy Lee (bass guitar, lead vocals, keyboards), Alex Lifeson (guitars, backing vocals) and Neil Peart (drums, percussion, lyrics). Forming in 1968, the band went through several configurations until arriving at its current line-up when Peart replaced original drummer John Rutsey in July 1974, two weeks before the group's first United States tour.
Document 6: No Reason: "No Reason" is the fourth single and second track by the Canadian rock band Sum 41, from their fourth studio album "Chuck" (2004). It was released in the United States and Europe as a promotional single. The song is the main track of the soundtrack of the movie "Dirty Love". Before the movie's premiere, Sum 41 released an unofficial music video for the single as a promotion for the movie, showing the band's scene in the movie where they play live, along with various other scenes from the movie. It was the band's last single before the departure of Dave Baksh in May 2006.
Document 7: Dial-A-Song: 20 Years of They Might Be Giants: Dial-A-Song: 20 Years Of They Might Be Giants is a 2002 compilation album by They Might Be Giants issued by Rhino Records and compiled by singer, songwriter, and guitarist John Flansburgh. Despite its name, the compilation does not include tracks from the band's "Dial-A-Song" service. It is instead an anthology of various album and live tracks from the band's history, spanning their full career up to the time of its release. It includes tracks from every album starting with 1986's "They Might Be Giants" up through "No!", their first children's album, which was released only three months before this compilation.
Document 8: Danny Weinkauf: Danny Weinkauf (born December 4, 1963) is a Grammy-winning New York-based musician and composer. He has been the longtime bassist for They Might Be Giants (TMBG). He has recorded and toured with the band since the late 1990s. Weinkauf had previously performed in a band called Lincoln along with TMBG's guitarist Dan Miller and drummer Gonzalo Martinez De La Cotera. He has written four songs for TMBG, all for their children's albums. Weinkauf wrote and sang "Where Do They Make Balloons?" on the children's album "No!", "Number Two" from "Here Come The 123s", "I Am a Paleontologist" from "Here Comes Science", and "Elephants" from "Why?" He also played bass alongside bandmate John Flansburgh for his solo project Mono Puff, in addition to providing additional bass on John Linnell's "State Songs" album.
Document 9: Sum 41: Sum 41 is a Canadian rock band from Ajax, Ontario. Originally called Kaspir, the band formed in 1996 and currently consists of lead vocalist/rhythm guitarist/keyboardist Deryck Whibley, lead guitarist/backing vocalist Dave Baksh, rhythm/lead guitarist/keyboardist/backing vocalist Tom Thacker, bassist/backing vocalist Jason McCaslin and drummer Frank Zummo.
Document 10: 13 Voices: 13 Voices is the sixth studio album by Canadian rock band Sum 41, released on October 7, 2016 through Hopeless Records. It is Sum 41's first album as a five-piece with a new lineup, as it features both Tom Thacker and returning co-founding member Dave Baksh on lead guitar and backing vocals and new drummer Frank Zummo, who replaced Steve Jocz. On May 11, 2016, the band announced that they had signed to Hopeless Records to release the crowd-funded project.
Document 11: They Might Be Giants discography: The following is a comprehensive discography of They Might Be Giants, an American alternative rock band comprising several artists including John Flansburgh, John Linnell, Marty Beller, Dan Miller, and Danny Weinkauf. The band's first release was the November 4, 1986 eponymously titled "They Might Be Giants", but TMBG did not gain commercial success until their March 1990 single "Birdhouse in Your Soul" from the album "Flood". "Birdhouse in Your Soul" reached #3 on the United States Modern Rock Tracks chart and #6 on the UK Singles Chart and remains their highest-charting single in both countries. Over the next two decades, They Might Be Giants released studio albums on a near-biennial fashion and currently have a total of 19 studio albums along with six live albums, eight compilation albums, 21 extended plays and 11 singles.
Document 12: Kasabian: Kasabian ( ) are an English rock band formed in Leicester in 1997. The band's original members consisted of vocalist Tom Meighan, guitarist and vocalist Sergio Pizzorno, guitarist Chris Karloff, and bassist Chris Edwards. The band's line-up was completed by drummer Ian Matthews in 2004 after a string of session drummers. Karloff left the band in 2006 and founded a new band called Black Onassis. Jay Mehler joined as touring lead guitarist in 2006. Mehler left the band for Liam Gallagher's Beady Eye in 2013, to be replaced by Tim Carter. In 2010 and 2014, Kasabian won the Q Awards for 'Best Act in the World Today', while they were also named "Best Live Act" at the 2014 Q Awards and the 2007 NME Awards. The band's music is often described as "indie rock", but Pizzorno has said he "hates indie bands" and does not feel Kasabian fit into that category.
Document 13: Dan Miller (guitarist): Dan Miller (born October 3, 1967) is an American musician and songwriter. He has toured and recorded with the alternative rock duo They Might Be Giants since late 1998. Generally, Miller plays guitars for the band. Prior to joining TMBG, he performed with the groups Edith O and Lincoln. Having left Lincoln for personal reasons in 1998, he was contacted by John Flansburgh, who offered him a spot as lead guitarist for They Might Be Giants' Fall 1998 tour. He has also toured with John Flansburgh as Mono Puff's guitarist in the late 1990s, and played on bandmate John Linnell's "State Songs" tour.
Document 14: Direct from Brooklyn: Direct from Brooklyn is a compilation of music videos by American alternative rock group They Might Be Giants. It was released on VHS in 1999 and DVD in 2003. The title refers to the home of John Linnell and John Flansburgh, founding members of the band. Many of the music videos were filmed in Brooklyn and other parts of New York City.
Document 15: Handle This: "Handle This" is the fourth and final single from the album "All Killer No Filler" by the Canadian rock band Sum 41. The single was only released in Germany and included the title song and live versions of "Motivation" and "Makes No Difference" as back-up tracks, on the CD single. Sum 41 former in-house manager and producer Greig Nori played guitar on the song and a music video was made for the song. The video was not released along with the single, and it is only released on the Does This Look Infected Too? EP.
ground_truth: Mono Puff