Question: What album by American musician Prince was the first to feature his band The Revolution and had the contoversial song Darling Nikki which eventually led to the use of "Parental Advisory" stickers and imprints on album covers? 

full_context: Document 1: Purple Rain-Union: "Purple Rain-Union" is the sixth episode of the fourth season of the animated comedy series "Bob's Burgers" and the overall 51st episode, and is written by Loren Bouchard and Nora Smith and directed by Tyree Dillihay. It aired on Fox in the United States on December 1, 2013. The title of the episode is a reference to the song, film, and album "Purple Rain" by Prince.
Document 2: Purple Reign: Purple Reign is a mixtape by American rapper Future, hosted and executive-produced by DJ Esco and Metro Boomin. It was released on January 17, 2016 with an 11-hour notice via LiveMixtapes and DatPiff. It is Future's first non-commercial mixtape since the mixtape trilogy "Monster" (2014), "Beast Mode" and "56 Nights" (2015). "Purple Reign" follows the commercial collaborative mixtape "What a Time to Be Alive" with Canadian rapper Drake. The mixtape features production from frequent collaborators Metro Boomin, Southside, Zaytoven, DJ Spinz and Nard & B, among others. The cover font is a tribute to Prince's landmark 1984 album "Purple Rain", which is stylized in the same fashion.
Document 3: Computer Blue: "Computer Blue" is the fourth track on Prince and the Revolution's soundtrack album, "Purple Rain". In the film, the song represents Prince's angst at the budding relationship between the characters played by Morris Day and Apollonia. The song was composed by Prince, with credit to his father, John L. Nelson for the guitar solo based on a piano instrumental written by Nelson and Prince. Prince titled the piece "Father's Song" and recorded it on piano for the film, though on screen it was portrayed as being played by Prince's on-screen father, actor Clarence Williams III. On the box-set "Purple Rain Deluxe" (2017) a different and longer recording of "Father's Song" is included.
Document 4: Parade (Prince album): Parade is the eighth studio album by American recording artist Prince, the final with The Revolution as his backing band. It also was the soundtrack album to the 1986 film "Under the Cherry Moon". It was released on March 31, 1986 by Paisley Park Records and Warner Bros. Records.
Document 5: Purple Rain Tour: The Purple Rain Tour was the fifth concert tour by American recording artist Prince and The Revolution following up on the success of his sixth studio album "Purple Rain" and his 1984 film "Purple Rain". According to "Spin", the tour sold over 1.7 million tickets.
Document 6: Purple Medley: "Purple Medley" is a song by American musician Prince from 1995. There is no album accompanying the single. The track is a mix of many hits and well-known songs from Prince's career. Some of the pieces of music are samples, while others are re-recorded for the mix. Some of the additional instrumentation is credited to The New Power Generation. The "Purple Medley" consists of snippets from the songs: "Batdance", "When Doves Cry", "Kiss", "Erotic City", "Darling Nikki", "1999", "Baby I'm a Star", "Diamonds and Pearls", "Purple Rain" and "Let's Go Crazy" and fades for the edit. The full version continues with "Sexy Dancer", "Let's Work", "Irresistible Bitch" (with the music of "Sexy MF"), "I Wanna Be Your Lover", "Alphabet St.", "Thieves in the Temple", the bassline to The Time's "777-9311", Sheila E.'s "A Love Bizarre", "If I Was Your Girlfriend", "Raspberry Beret", "Little Red Corvette", "Cream" and "Peach".
Document 7: Darling Nikki: "Darling Nikki" is a song produced, arranged, composed and performed by American musician Prince and originally released on his Grammy Award-winning 1984 album, "Purple Rain". Though the song was not released as a single, it gained wide notoriety for its sexual lyrics and in particular a reference to masturbation. Partly because of the lyrical content of "Darling Nikki", Tipper Gore founded the Parents Music Resource Center, which eventually led to the use of "Parental Advisory" stickers and imprints on album covers. Compared with the slick production of the other songs on the album, "Darling Nikki" was deliberately engineered to have a raw, live feel.
Document 8: Scandalous!: "Scandalous" is the eighth track on Prince's soundtrack album "Batman" and was released as the album's fourth single, five months after the album was released. The music is attributed to Prince and his father, John L. Nelson. A maxi-single was released after the single, titled "The Scandalous Sex Suite", which contained a three part 19 minute suite of the song Scandalous, the three parts named "The Crime", "The Passion" and "The Rapture". Kim Basinger, who played the character Vicki Vale in "Batman", also appeared on the maxi-single.
Document 9: Purple Rain (film): Purple Rain is a 1984 American rock musical drama film directed by Albert Magnoli, written by Magnoli and William Blinn, and produced by Robert Cavallo, Joseph Ruffalo and Steven Fargnoli. The film stars Prince in his acting debut playing "The Kid," a quasi-biographical character. "Purple Rain" was developed to showcase Prince's talents and contains several concert sequences.
Document 10: Purple Rain (album): Purple Rain is the sixth studio album by American recording artist Prince, the first to feature his band The Revolution, and is the soundtrack to the 1984 film of the same name. It was released on June 25, 1984 by Warner Bros. Records. To date, it has sold over 25 million copies worldwide, making it the third-best-selling soundtrack album of all time.
Document 11: The P.M.R.C. Can Suck on This: The P.M.R.C. Can Suck on This is an EP by the American punk rock band NOFX. It was originally released in 1987 through Wassail Records with hand-written labels (limited to 500 copies) and was re-released on January 1, 1990 through Fat Wreck Chords. The original version of the EP featured a black-and-white photo montage of Tammy Faye Bakker pegging then-husband (and televangelist) Jim Bakker as its cover, but was eventually changed to a picture of guitarist Eric Melvin playing on stage. The track "Shut Up Already" borrows a riff from the Led Zeppelin song "Living Loving Maid", while the "Liberal Animation" version ended with a riff from "Black Dog". All the tracks were compiled on the "Longest EP" compilation as tracks 26-30 respectively, where Johnny B. Goode appears at the end of "The Punk Song".
Document 12: Let's Go Crazy: "Let's Go Crazy" is a 1984 song by Prince and The Revolution, from the album "Purple Rain". It was the opening track on both the album and the film "Purple Rain". "Let's Go Crazy" was one of Prince's most popular songs, and was a staple for concert performances, often segueing into other hits. When released as a single, the song became Prince's second number-one hit on the "Billboard" Hot 100, and also topped the two component charts, the Hot R&B/Hip-Hop Songs and Hot Dance Club Play charts, as well as becoming a UK Top 10 hit. The B-side was the lyrically controversial "Erotic City". In the UK, the song was released as a double A-side with "Take Me with U".
Document 13: Purple Rain (song): "Purple Rain" is a song by Prince and The Revolution. It is the title track from the 1984 album of the same name, which in turn is the soundtrack album for the 1984 film of the same name, and was released as the third single from that album. The song is a combination of rock, R&B, gospel, and orchestral music. It reached number 2 in the United States for two weeks, behind "Wake Me Up Before You Go-Go" by Wham!, and it is considered to be one of Prince's signature songs.
Document 14: Erotic City: "Erotic City ("make love not war Erotic City come alive")" is a song by the musician Prince. It was released as the B-side to the 1984 single "Let's Go Crazy" and the 12" version of the 1986 single "Girls & Boys". The dance mix of "Erotic City" was released as a 3" and 5" CD single in Germany in 1989 and 1990 respectively. The artwork for the single features the same image of Prince that was used for the cover of "I Would Die 4 U". The extended version of the latter was included as the B-side of "Erotic City".
Document 15: Parents Music Resource Center: The Parents Music Resource Center (PMRC) was an American committee formed in 1985 with the stated goal of increasing parental control over the access of children to music deemed to have violent, drug-related or sexual themes via labeling albums with Parental Advisory stickers. The committee was founded by four women: Tipper Gore, wife of Senator and later Vice President Al Gore; Susan Baker, wife of Treasury Secretary James Baker; Pam Howar, wife of Washington realtor Raymond Howar; and Sally Nevius, wife of former Washington City Council Chairman John Nevius. They were known as the "Washington Wives" – a reference to their husbands' connections with government in the Washington, D.C. area. The PMRC eventually grew to include 22 participants before shutting down in the mid-to-late 90's.
ground_truth: Purple Rain