Question: What album was the song Gentleman on?

full_context: Document 1: Mr. Chu: "Mr. Chu" is a song by South Korean girl group Apink. The song is their 5th Korean single and served as the lead single from their 4th mini-album "Pink Blossom". It was released on March 31, 2014 by A Cube Entertainment. The song composed by Duble Sidekick. The song's music video was directed by Digipedi and released on the same day. Apink performed the song for the first time on KBS's "Music Bank" on April 4. The song peaked at number 2 on Billboard's K-Pop Hot 100. Apink won six music show trophies for "Mr. Chu" and wrapped up promotions for Mr. Chu on May 25. The song was the eighth best selling digital song in 2014, according to Gaon's year-end chart. "Mr.Chu" was used for G9 TV commercial featuring Apink and comedian Lee Guk-Joo. The Japanese version of "Mr. Chu" released as their second Japanese single on February 18, 2015. On January 22, 2015 the short PV for "Mr. Chu" 'on-stage' Japanese version was released.
Document 2: G-Dragon: Kwon Ji-yong (; born August 18, 1988), better known by his stage name G-Dragon, is a South Korean rapper, singer-songwriter, record producer, and fashion icon. After six years as a trainee under the record label YG Entertainment, G-Dragon rose to fame in the mid-2000s as one of two rappers in the South Korean hip hop boy band Big Bang. Despite initial lukewarm receptions, the group became one of the best-selling digital groups of all-time in Asia and one of the best-selling boy bands in the world.
Document 3: Seungri: Lee Seung-hyun (Hangul: 이승현; born December 12, 1990), better known by his stage name Seungri (Hangul: 승리, "Victory") and V.I when performing in Japan, is a South Korean singer, songwriter, record producer, actor, and entrepreneur. In the mid-2000s, Seungri rose to prominence as one of three vocalists and youngest member of the South Korean boy band Big Bang under YG Entertainment, which eventually became one of the best-selling digital group of all-time in Asia and one of the best-selling boy bands in the world. With the release of the group's second studio album "Remember" (2008), in which the second single released, "Strong Baby", was performed solely by Seungri, he began to adopt a more mature image as an artist.
Document 4: Act III: M.O.T.T.E World Tour: The Act III: M.O.T.T.E 'Moment of Truth The End' World Tour (referred to as Act III: M.O.T.T.E) is the second world tour by South Korean rapper and singer-songwriter G-Dragon. It was in support of his self-titled EP "Kwon Ji Yong" (2017). The tour started on June 10, 2017 in Seoul. Act III represents the beginning of the third decade of his life while 'M.O.T.T.E' (Hangul: 모태 ; Hanja: 母胎 ; RR: "motae " ) meaning "mother's womb" in Korean, or "from birth", also serves as an acronym for 'Moment Of Truth The End'. The tour is the largest tour by a Korean artist in the United States and Europe, and is the largest concert tour ever conducted by a Korean solo artist.
Document 5: Gwiyomi: The Gwiyomi Song, or Kwiyomi Song (귀요미 송), is a K-pop single by South Korean singer Hari and was released on February 18, 2013. It was inspired by a gesture from South Korean rapper Jung Ilhoon of boy group BtoB. The gesture is called 'Gwiyomi Player', that was popularized by South Korean variety show "Weekly Idol" through a segment called "The Aegyo Battle" (Battle of Cuteness) following Ilhoon's guest appearance on the show in October 2012. The song went on to be a viral success and an Internet meme after Korean Media outlet "Sports Seoul" uploaded a clip of Hari performing the gestures and singing the song. This video has since inspired many Asian netizens to upload their own versions onto the internet.
Document 6: Psy from the Psycho World!: Psy from the Psycho World! is the debut album by South Korean singer Psy. The album was released on January 12, 2001. The album contains 19 songs. Track 11 "I Love Sex" is a re-make of Lee Jung-hyun's song "I Love X", featured on her debut album "Let's Go to My Star". The album was also released worldwide through iTunes.
Document 7: PPAP (Pen-Pineapple-Apple-Pen): "PPAP (Pen-Pineapple-Apple-Pen)" (Japanese: ペンパイナッポーアッポーペン , Hepburn: Penpainappōappōpen ) is a single by Pikotaro, a fictional singer-songwriter created and portrayed by Japanese comedian Daimaou Kosaka. It was released as a music video on YouTube on 25 August 2016, and has since become a viral video. s of 2017 , the official video has been viewed over 122 million times, spawned parodies, and has been hailed as the new "Gangnam Style" by various newspapers and online media. The single itself reached number 1 on the "Billboard" Japan Hot 100 chart and became the shortest single to chart on the "Billboard" Hot 100. At the end of 2016, the songs charted at number 6 on Japan Hot 100 Year-end Chart.
Document 8: School Boy Records: School Boy Records is an American record label established in 2007 by Scooter Braun through his School Boy Entertainment, part of SB Projects, a full-service entertainment and marketing company encompassing a wide range of ventures including Raymond Braun Media Group, SB Consulting, SB Management, and Sheba Publishing. The label has a special business arrangement with Universal Music Group. School Boy Records' success came with the signing of Asher Roth and his single "I Love College" followed by Roth's debut album "Asleep in the Bread Aisle". They have also had huge success with Justin Bieber by the songs Baby (song) and One Time (Justin Bieber song) also Carly Rae Jepsen and her No.1 hit song "Call Me Maybe" which has been certified nine times platinum. As of September 2012, Braun has signed Korean rapper Psy, whose hit "Gangnam Style" has eclipsed charts around the globe. In late 2012, Universal Republic Records converted back to Republic Records, making all artists under the roster move to Republic. School Boy is now distributed by Republic Records.
Document 9: List of MYX Number-One Music Videos 2014: MYX is the only music channel in the Philippines that shows different music videos, domestically and internationally. Every week, its MYX Hit Chart presents the Top 20 favorite music videos voted by People's choice. In 2014, Taylor Swift's Shake It Off spent the longest week for any music video with a total of 10 weeks and later became the chart's year-end special Top 1. The year is also lucky for Western boy bands such as One Direction, 5 Seconds of Summer and The Vamps as their released music videos were all chart-toppers. Philippine Acts including Sarah Geronimo, Gloc-9, Kyla, and more also dominated the chart with most weeks.
Document 10: Psalm 1, the Christ Junkie: Samuel Koyire Kobina, popularly known as Psalm 1, the Christ Junkie is an award-winning Ghanaian poet rapper, spoken word artist, musician, artist coach and event organizer. He is one of the few along with the rap group Heavens Connection to have pioneered a new wave of gospel music known as gospel-rap or Christian rap also referred to as urban gospel music in Ghana. With his group Heavens Connection, they introduced Ghanaian youth to gospel rap/hip-hop locally. He has toured and performed at more than 350 shows since 2009. In 2016, he did a record 74 shows and is the most booked poet or spoken word artist and urban gospel artist in Ghana since 2013 with at least 50 shows per year. He is also a member of a Christian creative arts group, SASA (Speaker's and Singer's Association). Often credited as the face and one who led the pioneering and popularising of Spoken Word poetry and gospel rap in KNUST. He also holds the record of the highest number of shows done in a semester in KNUST (30) achieved in his last semester in 2014.
Document 11: 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.
Document 12: Gentleman (Psy song): "Gentleman" is a K-pop song by South Korean musician Psy released on April 12, 2013 (KST), serving as his 19th single. The song serves as the follow-up to his international hit single "Gangnam Style", which at the time of "Gentleman"'s release had been viewed on YouTube over 1 billion times. The first public performance of the song, with its associated dance, was unveiled at 6:30 pm on April 13 at Seoul World Cup Stadium in Seoul. A poster and Twitter message was released containing the main line of the song "I'm a mother f••••• gentleman"; The obscured word was later revealed to be "father".
Document 13: Secret videography: The videography of South Korean K-Pop band Secret consists of twelve music videos, 1 concert tour video, 2 music video compilations, 1 music video single and three promotional videos. In 2009, Secret signed a recording contract with TS Entertainment and released their first single "I Want You Back" which became their first music video. Secret's first music video to receive attention in South Korea was "Magic" and became one of their popular songs because of its choreography. The same year, the group released "Madonna", which featured a sophisticated image for them, as the song lyrically tells about living with confidence by becoming an icon in this generation, like the music icon Madonna. In early to mid-2011, the group departed from their sexy image and released "Shy Boy". The song ushered a new image for Secret which was inspired by the American 50's fashion and features a "cutesy" concept. Secret continued to channel the image of their previous single with the release of "Starlight Moonlight" and maintained the "retro" theme.
Document 14: Gentleman (The Saturdays song): "Gentleman" is a song recorded by English-Irish girl group The Saturdays from their fourth studio album "Living for the Weekend" (2013). It was released on 30 June 2013 as the third single from the album. It was written by Priscilla Renea, Lukas Nathanson and Scott Effman, with production by Ambience. The song hears the five-piece claim that finding a gentleman is difficult in modern society as compared to the 1990s.
Document 15: Gangnam Style: "Gangnam Style" (Korean: 강남스타일 , ] ) is the 18th K-pop single by the South Korean musician Psy. The song was released on July 15, 2012, as the lead single of his sixth studio album "Psy 6 (Six Rules), Part 1", and debuted at number one on South Korea's Gaon Chart. On December 21, 2012, "Gangnam Style" became the first YouTube video to reach one billion and two billion views. The song's music video has been viewed over 2.9 billion times on YouTube, and was the most viewed video on YouTube from November 24, 2012, when it surpassed the music video for "Baby" by Justin Bieber featuring Ludacris, to July 10, 2017, when it was surpassed by the music video for "See You Again" by Wiz Khalifa featuring Charlie Puth.
ground_truth: Psy 6 (Six Rules), Part 1