Question: Which Canadian singer was originally featured on the song "Bankroll" by American DJ Diplo?

full_context: Document 1: One Dance: "One Dance" is a song by Canadian rapper Drake from his fourth studio album, "Views" (2016). It features guest vocals from Nigerian Afrobeat artist Wizkid and British singer Kyla. The artists co-wrote the dancehall and afrobeat song with its co-producers Nineteen85, DJ Maphorisa, and Noah "40" Shebib, with production assistance from Wizkid. Crazy Cousinz and Kyla also received songwriting credits for the sampling of their 2008 UK funky song "Do You Mind".
Document 2: Bankroll Fresh: Trentavious Zamon White Sr. (August 2, 1987 – March 4, 2016), better known by his stage name Bankroll Fresh or Yung Fresh, was an American rapper from Atlanta, Georgia. Fresh is best known for his 2014 single "Hot Boy".
Document 3: Diplo discography: American DJ, producer and singer Diplo has released one studio album, six EPs, five compilations, four mixtapes, one live album and a series of singles, music videos and other appearances. His alias, short for "Diplodocus", derives from his childhood fascination with dinosaurs. During his rise to fame, Diplo worked with British musician M.I.A., an artist who is credited with giving him exposure in his early career. Since then, Diplo has worked on production and mixtape projects with many other pop artists, such as Die Antwoord, Britney Spears, Madonna, Shakira, Beyoncé, No Doubt, Justin Bieber, Usher, Snoop Dogg, Chris Brown, CL, and G-Dragon. As an artist, Diplo, combined with his other collaborations Major Lazer and Jack Ü, two electronic groups.
Document 4: Bankroll (song): "Bankroll" is a song by American DJ Diplo. It features rappers Rich Chigga, Rich the Kid and Young Thug. Originally, Justin Bieber was featured on the song, but due to Bieber already having exclusives with DJ Khaled ("I'm the One") and David Guetta ("2U") at around the same time as Diplo released "Bankroll", Diplo was forced to remove the original from his SoundCloud account. Diplo replaced Bieber's verse with a verse from Rich Chigga.
Document 5: Skrillex and Diplo Present Jack Ü: Skrillex and Diplo Present Jack Ü is the debut studio album by American DJ duo Jack Ü, individually known as Skrillex and Diplo. It was released on February 27, 2015 by OWSLA and Mad Decent, Skrillex and Diplo's respective labels. The album features collaborations with a range of artists including Kiesza, AlunaGeorge, 2 Chainz, Missy Elliott and Justin Bieber. It also features the Trinidadian soca artist Bunji Garlin. The album produced the internationally successful single "Where Are Ü Now" featuring Justin Bieber.
Document 6: Top Ranking: A Diplo Dub: Top Ranking: A Diplo Dub is a mixtape by American artist Santigold (then going by "Santogold") and Philadelphia-based DJ Diplo, released on July 15, 2008.
Document 7: Money Sucks, Friends Rule: Money Sucks, Friends Rule is the debut studio album by Dillon Francis, an American electronic music producer known for being one of the pioneers of moombahton and moombahcore. The album features collaborations from artists such as Major Lazer, Martin Garrix, Mad Decent label-mate DJ Snake, rapper Twista, Panic! at the Disco's Brendon Urie and more. It was released on October 27, 2014 on Mad Decent in collaboration with Columbia Records.
Document 8: I Changed a Lot: I Changed a Lot is the eighth studio album by DJ Khaled. It was released on October 23, 2015, by We the Best Music Group and RED Distribution. Recording sessions took place during 2014 to 2015, with its production by Khaled, along with The Beat Bully, Lee on the Beats, Danja, Bkorn and The Mekanics, as well as guest appearances from Future, Rick Ross, Boosie Badazz, Jeezy, Chris Brown, August Alsina, Fetty Wap, Yo Gotti, Trick Daddy, French Montana, Meek Mill, Beanie Sigel, Jadakiss, Lil Wayne, Big Sean. Trey Songz, Jeremih, Ace Hood, Vado, Jay-Z, Mavado, John Legend, Usher and Fabolous.
Document 9: I'm the One (DJ Khaled song): "I'm the One" is a song written and performed by American musician DJ Khaled; Canadian singer Justin Bieber; and American rappers Quavo, Chance the Rapper and Lil Wayne. The song was released on April 28, 2017, by We the Best and Epic Records as the second single from Khaled's tenth studio album, "Grateful".
Document 10: Major Key (album): Major Key (stylized as Major 🔑) is the ninth studio album by American musician <a href="DJ%20Khaled">DJ Khaled</a>. It was released on July 29, 2016, by We the Best Music Group and Epic Records. The album features guest appearances from Future, Big Sean, Rick Ross, Jay-Z, Drake, Nas, Kendrick Lamar, Betty Wright, J. Cole, Bryson Tiller, Nicki Minaj, Chris Brown, August Alsina, Jeremih, Kodak Black, Jeezy, French Montana, YG, Yo Gotti, Gucci Mane, 2 Chainz, Jadakiss, Fabolous, Fat Joe, Busta Rhymes, Kent Jones, Travis Scott, Lil Wayne, Meghan Trainor, Wiz Khalifa, Wale and Mavado.
Document 11: Y.R.N. (Young Rich Niggas): Y.R.N. (Young Rich Niggas) is a mixtape by American hip hop group Migos. It was released on June 13, 2013. The album features notable guest appearances from rappers Gucci Mane, Trinidad James, Riff Raff and Soulja Boy. This mixtape is notable for the single "Versace", the single reached number 99 on the US "Billboard" Hot 100 chart, number 31 on the US Hot R&B/Hip-Hop Songs chart, number 23 on the US Hot Rap Songs chart and number 11 on the US Top Heatseekers chart. "Versace" was placed in multiple year-end lists of 2013. Diplo included it in his 2013 round-up set on BBC Radio 1. "XXL" named it one of the top five hip hop songs of 2013. The official music video, directed by Gabriel Hart, was released on September 30, 2013. It shows Migos and Zaytoven at a luxurious mansion, wearing Versace clothes and accessories. The video also features a snippet of Migos second single off the mixtape "Hannah Montana". As of November 2014, it has gained over nine million views on YouTube. "Y.R.N." later reached number 74 on the US Hot R&B/Hip-Hop Songs chart, their first mixtape to do so on the "Billboard" charts. The mixtape has accumulated over 500,000 downloads from mixtape websites like DatPiff.com, MixtapeMonkey.com, and HotNewHipHop.com.
Document 12: I'm on One: "I'm on One" is a song by American hip hop artist DJ Khaled, released as the second single from his fifth studio album, "We the Best Forever". The song features hip-hop artists Drake, Rick Ross and Lil Wayne and features production from Canadian producers T-Minus, Nikhil S. and Noah "40" Shebib. It was released for digital download in the United States on May 20, 2011. The song peaked at number ten on the "Billboard" Hot 100, becoming the highest second peaking song behind "I'm The One" and first top-ten hit in the United States for both DJ Khaled and Rick Ross. It also topped the R&B/Hip-Hop Tracks chart for 11 weeks, and the Rap Songs chart for 13 consecutive weeks, which is the third longest streak on that chart, behind Drake's "Best I Ever Had" at 15 weeks and Missy Elliott's "Hot Boyz", featuring Nas, Eve and Q-Tip at 18. As of May 2014, the song has sold 1,875,000 copies in the U.S.
Document 13: BedRock: "BedRock" is the second single by hip hop group Young Money Entertainment from their debut collaboration album "We Are Young Money". It is performed by Young Money artists Lil Wayne, Gudda Gudda, Nicki Minaj, Drake, Tyga, Jae Millz, and features R&B singer Lloyd. It was released as a CD in the United Kingdom on March 22, 2010. "BedRock" is featured as a bonus track on the Japanese and New Zealand editions of Nicki Minaj's debut studio album, "Pink Friday".
Document 14: DJ Khaled discography: American musician DJ Khaled has released ten studio albums, twenty six singles and nine featured singles. His first album, "Listennn... the Album", was released in 2006. "We the Best", his second album, was released in 2007 and contains the hits "We Takin' Over", with Akon, T.I., Rick Ross, Fat Joe, Birdman and Lil Wayne, and "I'm So Hood", with T-Pain, Rick Ross, Trick Daddy, and Plies. The two songs peaked at number 28 and number 19 on the US "Billboard" Hot 100 and are platinum songs, and "We the Best" peaked at number eight on the US "Billboard" 200. His next album, "We Global", from 2008, peaked at number seven on the albums chart and has the song "Out Here Grindin'", featuring Akon, Rick Ross, Plies, Lil Boosie, Ace Hood, and Trick Daddy. "All I Do is Win" had peaked at number 24 on the Hot 100 as "Victory"'s third single, and was certified double platinum by the RIAA. Released in 2011 was "We the Best Forever", containing the top 10 song "I'm On One", with Drake, Rick Ross and Lil Wayne. The album hit number five on the "Billboard" 200.
Document 15: One of a Kind (G-Dragon song): "One of a Kind" is a song by South Korean rapper G-Dragon. Released on August 24, 2012 through YG Entertainment, it served as the lead single from the extended play of the same name. Written solely by G-Dragon, the rapper also worked with long-time collaborator Choice37 to produce the music. The song was well received by music critics, that considered it one of his best work and one of the most influential Korean hip hop tracks. "One of a Kind" peaked at number nine on the Gaon Music Chart in South Korea.
ground_truth: Justin Bieber