Question: What record label does the singer of "Walk on the Wild Side" belong to?

full_context: Document 1: Street Hassle (song): "Street Hassle" is a song recorded by Lou Reed for his 1978 album of the same name. It is 10 minutes and 56 seconds long and divided into three distinct sections: "Waltzing Matilda," "Street Hassle," and "Slipaway." Part one, "Waltzing Matilda," describes a woman picking up and paying a male prostitute. In Part Two, "Street Hassle," a drug dealer speaks at length about the death of a woman in his apartment to her companion. Part Three, "Slipaway," contains a brief, uncredited, spoken word section by Bruce Springsteen (from 9:02 to 9:39) and a dirge sung by Reed about love and death. It was recorded in E major.
Document 2: The Definitive Collection (Lou Reed album): The Definitive Collection is Arista's 1999 Lou Reed collection, complete with an appropriately decadent cover photo by Mick Rock from the mid-1970s.
Document 3: Lulu (Lou Reed and Metallica album): Lulu is a collaboration album between rock singer-songwriter Lou Reed and heavy metal band Metallica. It was released on October 31, 2011 by Warner Bros. in the U.S. and Vertigo elsewhere. The album is the final full-length studio recording project that Reed was involved in before his death in October 2013. It was recorded in San Rafael, California, during April through June 2011, after Reed had played with Metallica at the Rock and Roll Hall of Fame's 25th Anniversary Concert which led to them wanting to collaborate. The lead single, titled "The View", was released on September 27, 2011.
Document 4: Perfect Day (Lou Reed song): ``Perfect Day ''is a song written by Lou Reed in 1972. It was originally featured on Transformer, Reed's second post-Velvet Underground solo album, and as a double A-side with his major hit,`` Walk on the Wild Side''. Its fame was given a boost in the 1990s when it was featured in the 1996 film Trainspotting and after a star - studded version was released as a BBC charity single in 1997, that became the UK's number one single for three weeks. Reed re-recorded the song for his 2003 album The Raven.
Document 5: Rock and Roll Diary: 1967–1980: Rock and Roll Diary: 1967–1980 was released by Arista Records in 1980 as a double album split between tracks by the Velvet Underground and tracks by Lou Reed, attempting to demonstrate the arc of his songwriting over the first fifteen years of his career. The versions of "Heroin" and "Femme Fatale" are from the 1974 Velvet Underground live album "". "Coney Island Baby" comes from the "" album. The liner notes for the album were written by Ellen Willis.
Document 6: Vicious (Lou Reed song): "Vicious" is a song written by Lou Reed, released as a single in 1973 and originally featured on "Transformer", Reed's second post-Velvet Underground solo album.
Document 7: The Man Who Sold the World: "The Man Who Sold the World" is a song written and performed by David Bowie. It is the title track of his third album, which was released in the US in November 1970 and in the UK in April 1971. The song has been covered by a number of other artists, notably by Lulu, who had a UK No. 3 hit with her version in 1974, and Nirvana, whose 1993 performance of the song for the television program "MTV Unplugged" introduced it to a new audience.
Document 8: White Light/White Heat (song): "White Light/White Heat" was recorded in the course of the recording sessions for "White Light/White Heat" in September 1967 at Scepter Studios in Manhattan. The song's vocals are performed primarily by Lou Reed, with John Cale and Sterling Morrison performing backing vocals. The song, much like "I'm Waiting for the Man", features a pounding rock-and-roll Barrelhouse-style piano vamp. The song is about the sensations produced by intravenous injection of methamphetamine and features a heavily distorted electric bass outro played by John Cale over a single chord. This bass solo purportedly mimics the throbbing, ear-ringing effects experienced during the methamphetamine "rush."
Document 9: Ecstasy (Lou Reed album): Ecstasy is the eighteenth solo studio album by American musician Lou Reed, released in 2000. It is a concept album about Reed's personal experiences with marriage and relationships and is his final rock album that is not a collaboration.
Document 10: The Creation of the Universe: The Creation of the Universe is an album by Lou Reed's Metal Machine Trio. The trio was formed in 2008 with Ulrich Krieger and Sarth Calhoun to play music inspired by Reed's 1975 album "Metal Machine Music". The first concerts of the group were on October 2 and 3, 2008, at REDCAT in Los Angeles. The group was named Metal Machine Trio only after these concerts. The concert itself was announced as Lou Reed and Ulrich Krieger: Unclassified. The CD is the unedited live recording of both nights. It is available in a variety of formats from Lou Reed's website including, MP3, FLAC, 2 Disk CD and Deluxe CD. Cover and inlay photos are by Lou Reed.
Document 11: Walk on the Wild Side (Lou Reed song): "Walk on the Wild Side" is a song by Lou Reed from his second solo album, "Transformer" (1972). It was produced by David Bowie and Mick Ronson, and released as a double A-side with "Perfect Day". The song received wide radio coverage, despite its touching on taboo topics such as transsexual people, drugs, male prostitution, and oral sex. In the United States, RCA released the single using an edited version of the song without the reference to oral sex. In 2010, "Rolling Stone" ranked it at number 223 in its list of the 500 greatest songs of all time.
Document 12: In Through the Out Door: In Through the Out Door is the eighth and final studio album by the English rock band Led Zeppelin. It was recorded over a three-week period in November and December 1978 at ABBA's Polar Studios in Stockholm, Sweden, and released by Swan Song Records on 15 August 1979. In 1980, the band's drummer John Bonham died, and they disbanded soon after.
Document 13: The Last Album: The Last Album was the last studio album Albert Ayler recorded before his death in 1970. The album was released posthumously (hence the title) in 1971 on Impulse! Records. The album consists of outtakes from the sessions for "Music Is the Healing Force of the Universe". The album was recorded August 26-29, 1969 at Plaza Sound Studios in New York City.
Document 14: Walk on the Wild Side (Lou Reed song): The baritone saxophone solo played over the fadeout of the song is performed by Ronnie Ross, who had taught David Bowie to play the saxophone during Bowie's childhood.
Document 15: Metallica: This Monster Lives: The book follows the emotional roller-coaster both he and his film partner Bruce Sinofsky and the band Metallica went through during the creation film. The book takes in the time from Berlinger and Sinofsky's first meeting with Metallica in 1999 to the 2003 Summer Sanitarium Tour. Berlinger and Sinofsky's relationship was at an all time low, exacerbated by Berlinger's decision to direct the disastrous sequel to the Blair Witch. At the start of filming the relationship between the band members, especially between vocalist James Hetfield and drummer Lars Ulrich, is in a similarly perilous position after bassist Jason Newsted quit the band and long standing grudges between the remaining members threaten to escalate past the point of no return.
ground_truth: Warner Bros.
sub_queries: Walk on the Wild Side >> performer Answer: Lou Reed
Lou Reed >> record label Answer: Warner Bros.