Question: Who wrote the song which was ahead of "After the Love Has Gone" on the Billboard Hot 100 singles chart?

full_context: Document 1: After Dark (Andy Gibb album): After Dark is an album by Andy Gibb. It was his final studio album, and was released in 1980. It features his last US Top 10 single "Desire", "I Can't Help It" (a duet with Olivia Newton-John) and two Bee Gees numbers "Rest Your Love on Me" (duet with Olivia Newton-John) and "Warm Ride".
Document 2: Please Don't Go (KC and the Sunshine Band song): "Please Don't Go" is a song recorded and released in 1979 on the KC and the Sunshine Band album "Do You Wanna Go Party". Originally written in the key of D flat, the song was the band's first love ballad, in which the subject pleads for a second chance. Shortly after the song's one-week run at number one, the group broke up and Harry Wayne Casey went solo. The song was a number-one hit on the Australian ARIA Charts, the band's fifth and final number-one hit on "Billboard" Hot 100 charts, and the first number-one hit of the 1980s. As the band was known as a pioneer of the disco genre, the song was eerily released on the same day as Disco Demolition Night in Chicago, Illinois.
Document 3: We're an American Band (song): "We're an American Band" (from the album of the same name) became Grand Funk Railroad's first #1 single on September 29, 1973, Mark Farner's 25th birthday. Written by Don Brewer and produced by Todd Rundgren, its huge chart success broadened Grand Funk's appeal. It was sung by Brewer rather than Farner, who usually took lead vocals.
Document 4: After All (Cher and Peter Cetera song): "After All" is a 1989 "Billboard" Hot 100 hit song performed as a duet by American singer and actress Cher and American singer and bass player Peter Cetera (former lead vocalist of Chicago), released on February 21, 1989, by Geffen Records. It was used as the love theme for the movie "Chances Are" and was nominated for Best Original Song at the Academy Awards 1989. The song was also the first North American single release from Cher's nineteenth album "Heart of Stone". The song appears on Peter Cetera's 1997 album "" and his 2017 album, "The Very Best of Peter Cetera".
Document 5: My Own Summer (Shove It): "My Own Summer (Shove It)" is a single by American alternative metal band Deftones, their first to be taken from the album "Around the Fur". It was released in 1997 by Maverick Records. It was Deftones' first charting single, reaching number 29 in the UK Singles Chart. The song has been described as alternative metal and nu metal.
Document 6: List of Top Pops number-one singles: "Top Pops" is a former British weekly pop music newspaper. It was founded as a monthly publication by Woodrow Wyatt in May 1967, becoming fortnightly in November 1967. On 25 May 1968, editor Colin Bostock-Smith began compiling a singles sales chart using a telephone sample of approximately twelve W H Smith & Son stores – the first single to reach number one on the "Top Pops" chart was "Young Girl" by Gary Puckett & The Union Gap. The charts and paper were published weekly with effect from 22 June 1968. On 20 September 1969 the paper was rebranded "Top Pops & Music Now", and subsequently became "Music Now" from 21 March 1970 – at this point the chart was sampling between 30 and 40 stores. From 27 February 1971 the chart was no longer published and in May 1971 the newspaper ceased publication. During the publication of the chart, 55 different singles reached number one. The only one to be knocked off number one and then regain the top spot was "Mony Mony" by Tommy James and the Shondells. The final chart-topper was "My Sweet Lord" by George Harrison.
Document 7: You're My Heart, You're My Soul: "You're My Heart, You're My Soul" is the first single by German duo Modern Talking released off their debut album "The 1st Album". The single was released on 29 October 1984 but entered the top 40 in Germany on 21 January and entered the top 10 at no. 9 in Germany on 28 January 1985, almost 3 months after its release date. It took another 5 weeks for the single to reach the top of the German single chart, it spent six weeks at the number one position in Germany and total of 25 weeks within the German Single Chart eventually reaching a gold status for selling well over 250,000 units at home. "You're My Heart, You're My Soul" is considered their best-selling single to date with worldwide sales said to exceed 8 million copies.
Document 8: Get Down (You're the One for Me): "Get Down (You're the One for Me)" is a song by American boy band Backstreet Boys. It was released on April 30, 1996 as the third single from their international self-titled debut album. It was later included on their U.S. debut album as well.
Document 9: Love Is Gone: "Love Is Gone" is a song by French house DJ David Guetta and American singer Chris Willis. It is the second single from Guetta's third studio album "Pop Life". The single was released in France on June 2007 and in the UK on August 2007. The song reached #9 in the UK Singles Chart, becoming his second Top 10 hit. The song also received crossover airplay on top 40 radio stations in the USA, leading it to reach #98 on the Billboard Hot 100 singles chart. The song has been remixed by co-producers Frédéric Riesterer (as Fred Rister) & Joachim Garraud themselves, Eddie Thoneick, Fuzzy Hair and Amo & Navas. The Fred Rister & Joachim Garraud remix was the one of the first David Guetta productions to use its guitar sound, which was later used in the songs "I Gotta Feeling" by The Black Eyed Peas, and "Gettin' Over", which also featured Chris Willis (as well as the single version "Gettin' Over You" with Fergie and LMFAO). The music video of the song features the actress, Kelly Thiebaud.
Document 10: After the Love Has Gone: "After the Love Has Gone" is a 1979 hit single for Earth, Wind & Fire, written by David Foster, Jay Graydon, and Bill Champlin for the album "I Am". It reached #2 on the "Billboard" Hot 100 singles chart for two weeks, behind The Knack's smash hit "My Sharona".
Document 11: Airplay (band): Airplay was a short-lived American band, formed by David Foster and Jay Graydon. The band released a self-titled album in 1980, containing "Nothin' You Can Do About It" (originally recorded by The Manhattan Transfer) and a cover of the Earth, Wind & Fire hit "After the Love Has Gone", written by Foster and Graydon with Bill Champlin.
Document 12: Here I Go Again (The Miracles song): "Here I Go Again" was a 1969 hit single by The Miracles (aka "Smokey Robinson and the Miracles") on Motown Records' Tamla label subsidiary. It was taken from their top-25 Pop album "Time Out for Smokey Robinson & The Miracles" from that year, and was the "B" side of their hit single, "Doggone Right". Like that song, "Here I Go Again" was also a Top 40 hit on the "Billboard" Hot 100, peaking at number 37. It was a Top 20 hit on the R&B chart as well, peaking at number 15. It was written by Miracles members Smokey Robinson and Pete Moore, along with Motown staff songwriters Al Cleveland and Terry "Buzzy" Johnson, a member of the legendary R&B group The Flamingos.
Document 13: I Got You Babe: "I Got You Babe" is a song written by Sonny Bono. It was the first single taken from the debut studio album "Look at Us", of the American pop music duo Sonny & Cher. In August 1965, their single spent three weeks at number 1 on the "Billboard" Hot 100 in the United States where it sold more than 1 million copies and was certified Gold. It also reached number 1 in the United Kingdom and Canada. In 1985, a cover version of "I Got You Babe" by British reggae/pop band UB40 featuring American singer Chrissie Hynde, peaked at number one in the UK Singles Chart and reached number 28 on the US "Billboard" Hot 100 chart. A 1993 version by Cher with Beavis and Butt-Head bubbled under the Hot 100 chart.
Document 14: You Keep Me Hangin' On: "You Keep Me Hangin' On" is a 1966 song written and composed by Holland–Dozier–Holland. It first became a popular "Billboard" Hot 100 number one hit for the American Motown group The Supremes in late 1966. The rock band Vanilla Fudge covered the song a year later and had a top ten hit with their version. British pop singer Kim Wilde covered "You Keep Me Hangin' On" in 1986, bumping it back to number one on the "Billboard" Hot 100 in June 1987. The single reached number one by two different musical acts in America. In the first 32 years of the "Billboard" Hot 100 rock era, “You Keep Me Hangin' On” became one of only six songs to achieve this feat. In 1996, country music singer Reba McEntire's version reached number 2 on the US "Billboard" Hot Dance Club Play chart.
Document 15: My Sharona: "My Sharona" is the debut single by the Knack. The song was written by Berton Averre and Doug Fieger, and released in 1979 from their album "Get the Knack". It reached number one on the "Billboard" Hot 100 singles chart where it remained for 6 weeks, and was number one on "Billboard"' s 1979 Top Pop Singles year-end chart.
ground_truth: Berton Averre and Doug Fieger