Question: What song on the album No Protection was a No. 1 in the "Billboard" Hot 100 in April 1987?
Context: The discography of Outkast, an American hip hop duo consisting of rappers André 3000 and Big Boi, consists of five studio albums, one compilation album, one soundtrack album, one video album, thirty-two singles (including eight as featured artists), three promotional singles and twenty-one music videos.  In 1992, Outkast became the first hip hop act to be signed to the label LaFace Records; with their first studio album "Southernplayalisticadillacmuzik" (1994) that debuted at number 20 on the US "Billboard" 200.  "Southernplayalisticadillacmuzik" spawned the commercially successful single "Player's Ball" that has reached at number 37 on the US "Billboard" Hot 100.  It was later certified gold by the Recording Industry Association of America (RIAA).  Their following two albums, "ATLiens" (1996) and "Aquemini" (1998), were commercially successful in the United States; both albums peaked at number two on the "Billboard" 200, and were certified double-platinum by the Recording Industry Association of America (RIAA).  Three singles were solicited from each album; all three from "ATLiens" charted on the "Billboard" Hot 100, with "Elevators (Me & You)" peaking at number 12, making it the most successful.  The lead single from "Aquemini", "Rosa Parks", peaked at number 55 on the "Billboard" Hot 100: two more singles, "Skew It on the Bar-B" and "Da Art of Storytellin' (Pt. 1)", were released from the album.  In 1998, Outkast collaborated with hip hop group Goodie Mob on the single "Black Ice (Sky High)" and rapper Cool Breeze on the single "Watch for the Hook"; both singles peaked at numbers 50 and 73 on the "Billboard" Hot 100, respectively. American pop rock band Train has released ten studio albums, two live albums, one video album, four extended plays, 30 singles, four promotional singles, and 26 music videos.  The band independently released their eponymous debut studio album in 1996, two years after their formation.  In February 1998, the band signed to Aware Records and Columbia Records and re-released the album under the two labels.  Three singles were released from "Train"; the album's second single, "Meet Virginia", peaked at number 20 on the US "Billboard" Hot 100.  The album peaked at number 76 on the US "Billboard" 200 and was certified platinum by the Recording Industry Association of America (RIAA).  In the period following the release of "Train", producer Brendan O'Brien started working with the band in a partnership that would last for three albums.  The band released their second studio album "Drops of Jupiter" in March 2001; it was preceded by the release of its lead single, "Drops of Jupiter (Tell Me)".  The single became a commercial success, peaking at number five on the US "Billboard" Hot 100 and also becoming a top ten hit in Australia, the Netherlands and the United Kingdom.  "Drops of Jupiter (Tell Me)" also won an award for Best Rock Song at the 44th Grammy Awards.  The album peaked at number six on the "Billboard" 200, earning a double platinum certification from the RIAA. " She's on Fire", the third single from "Drops of Jupiter", achieved moderate success in Australia and the UK.  Train's third studio album, "My Private Nation", was released in June 2003.  It peaked at number six on the "Billboard" 200 and was certified platinum by the RIAA.  The album's first two singles, "Calling All Angels" and "When I Look to the Sky", peaked at numbers 19 and 74 respectively on the "Billboard" Hot 100.  The band released their fourth studio album "For Me, It's You" in January 2006.  The album peaked at number 10 on the "Billboard" 200 and spawned three singles. American singer Kesha made her international debut in early 2009 featuring on the Flo Rida single, "Right Round", which reached number one in the United States on the "Billboard" Hot 100 and topped the charts in five other countries.  Kesha's debut album, "Animal", released in January 2010, topped the Canadian and American charts, debuting at number one in its first week on the "Billboard" 200.  The album's lead single, and Kesha's solo debut single, "Tik Tok", was released in August 2009 and reached number one in eleven countries and spent nine consecutive weeks on top of the "Billboard" Hot 100.  Since its release in 2009, the song has sold 15 million copies worldwide, therefore making it the best-selling digital single of all time.  The album spawned three more hit singles, "Blah Blah Blah", "Your Love Is My Drug" and "Take It Off".  She topped eight charts on the 2010 "Billboard" Year-End Chart, including Top New Artists, Hot 100 Songs and Hot 100 Artists. "Nothing's Gonna Stop Us Now" is a 1987 song co-written by Albert Hammond and Diane Warren, recorded by the American rock band Starship in 1986.  It is a duet featuring Starship vocalists Grace Slick and Mickey Thomas.  Featured as the theme to the romantic comedy film "Mannequin", it hit No. 1 in the "Billboard" Hot 100 on April 4, 1987 and reached No. 1 on the UK Singles Chart for four weeks the following month and became the UK's 2nd biggest selling single of 1987.  The song also reached the top 10 in six European countries.  The single became the first number one single by songwriter Diane Warren.  At the time, it made Grace Slick (aged 47) the oldest woman to have a number one single in the United States though the record was later broken by Cher's "Believe" in 1999 (aged 52). No Protection (1987) is the second album by Starship.  The album featured the hit single "Nothing's Gonna Stop Us Now", and the Top 10 hit "It's Not Over ('Til It's Over)", the former of which was included on the soundtrack of the fantasy comedy movie "Mannequin" and the latter of which was a tune originally performed the previous year by one-time Manfred Mann's Earth Band frontman Chris Thompson for "Playing for Keeps" soundtrack.  This was the last album to be produced for Grunt Records, and the final Starship album to feature Grace Slick on vocals; she left Starship in 1988 and rejoined Jefferson Airplane for their reunion tour and self-titled reunion album, "Jefferson Airplane" in 1989.  The Diane Warren-penned ballad "Set the Night to Music" would become a hit four years later in 1991, as a duet between R&B legend Roberta Flack and reggae singer Maxi Priest, as released from Flack's album "Set the Night to Music". "Stone Love" is a 1987 song written and performed by Kool & the Gang, issued as the second single from the band's 1986 album "Forever".  The song peaked at number 10 on the "Billboard" Hot 100 in April 1987, becoming the band's final Top 10 single, and also their final top 40 to date. The "Billboard" Hot 100 is a chart that ranks the best-performing singles of the United States.  Its data, published by "Billboard" magazine and compiled by Nielsen SoundScan, is based collectively on each single's weekly physical and digital sales, as well as airplay and streaming.  At the end of a year, "Billboard" will publish an annual list of the 100 most successful songs throughout that year on the Hot 100 chart based on the information.  For 2005, the list was published on December 20, calculated with data from December 4, 2004 to November 26, 2005.  The R&B track We Belong Together by American singer Mariah Carey was named the number 1 song of 2005 and it spent the longest time at number 1 for the year, 14 weeks.  This is also the joint-second longest time at number 1 for a single in the 57-year history of the Hot 100 post-1958 inception, after Mariah Carey's own collaboration with Boyz II Men, One Sweet Day, which spent 16 weeks atop the Hot 100 from 1995 to 1996. "Let's Go!"  is a single by Wang Chung.  Although the song was on their 1986 album, "Mosaic", it didn't get released as a single until January 6, 1987.  The single was a hit for Wang Chung in the United States, and it provided the band with their second (and so far, last) top-10 hit on the "Billboard" Hot 100 in April 1987, peaking at #9.  The single also formed the basis for a music video.  It also hit #9 on the Canada "RPM" Top 100 Singles chart. "Something So Strong" is a rock song written by Neil Finn and Mitchell Froom and performed by the band Crowded House for their eponymous debut album (June 1986).  The track was released as the album's fifth and final single in April 1987.  The single peaked at No. 18 on the Australian Kent Music Report Singles Chart, No. 3 in New Zealand, No. 7 in the United States "Billboard" Hot 100, and No. 10 on the Canadian "RPM" 100. "Wanted Dead or Alive" is a single by American rock band Bon Jovi.  It is from their 1986 album "Slippery When Wet".  The song was written by Jon Bon Jovi and Richie Sambora and was released in 1987 as the album's third single.  During a February 20, 2008 encore performance in Detroit, Jon Bon Jovi told the crowd about running into Bob Seger at a Pistons game.  As he introduced his song "Wanted Dead or Alive", he said it was inspired by Seger's "Turn the Page" hit and called the song the band's anthem.  The song peaked at #7 on the "Billboard" Hot 100 chart and #13 on the Mainstream Rock Tracks chart, making it the third single from the album to reach the Top 10 of the Hot 100.  As a result, "Slippery When Wet" became the first hard rock album to have 3 top 10 hits on the "Billboard" Hot 100.
Answer: Nothing's Gonna Stop Us Now