Question: Olivia Newton-John's song Magic was displaced from the top by Sailing, which is by what American singer-songwriter from San Antonio, Texas?

full_context: Document 1: Chris Mann (singer): Christopher Michael "Chris" Mann (born May 5, 1982) is a classically trained American singer-songwriter from Wichita, Kansas.
Document 2: Chris Martin: Christopher Anthony John Martin (born 2 March 1977) is an English singer, songwriter, musician, record producer and philanthropist. He is best known as the lead singer and co-founder of the British rock band Coldplay. Born in Whitestone, near Exeter in Devon, Martin went to University College London where he formed a rock band with Jonny Buckland in 1996 called Pectoralz, which was eventually renamed Coldplay in 1998.
Document 3: A Summer Night with Olivia Newton-John: A Summer Night with Olivia Newton-John was the eighteenth concert tour by Australian singer Olivia Newton-John, in support of her sixth soundtrack "A Few Best Men". The tour name drifts from her 1978 hit, "Summer Nights", from the musical film "Grease". It is Newton-John largest tour since the Heartstrings World Tour, which runs from 2002 to 2005. It was her first tour in the United Kingdom in over 30 years.
Document 4: Magic (Jolin Tsai album): Magic ( ) is the fifth studio album by Taiwanese singer Jolin Tsai ( ). It was released on March 7, 2003, by Sony Music Taiwan. Tsai managed to sign with Sony in February 2002, and got one of her biggest successes in her music career. A reinvention in her music and image gave her what she needed to make a comeback to the music scene after being gone for almost a year. The highly anticipated album sold more than 1.5 million copies in Asia, with more than 360,000 copies sold in Taiwan alone, and made her the best-selling female singer of the year in Taiwan. The opening track, "Say Love You", reached number 3 on the Hit FM Top 100 Singles of the Year. The title track, "Magic", reached number 24 on the chart. The fifth track, "Prague Square", reached number 65 on the chart. The album instantly restored her reputation, earned her two Golden Melody Award nominations for Best Mandarin Female Singer and Best Pop Vocal Album, and earned her an MTV Asia Award nomination for Favorite Artist Taiwan.
Document 5: Christopher Cross: Christopher Cross (born Christopher Charles Geppert; May 3, 1951) is an American singer-songwriter from San Antonio, Texas.
Document 6: Chris de Burgh: Christopher John Davison (born 15 October 1948), known professionally as Chris de Burgh, is a British-Irish singer-songwriter and instrumentalist. He is an art rock performer who also writes pop-oriented material. He has had several top 40 hits in the UK and two in the US, but he is more popular in other countries, particularly Norway and Brazil. He is most famous for his 1986 love song "The Lady in Red", which reached number one in several countries. De Burgh has sold over 45 million albums worldwide.
Document 7: Totally Hot: Totally Hot is Olivia Newton-John's ninth US and tenth international studio album. Released in November 1978, it became her first solo Top 10 (No. 7) album since 1975's "Have You Never Been Mellow". Dressed on the album cover all in leather, Newton-John's transformation was seen to mirror her character Sandy's transformation in "Grease". The album's singles "A Little More Love" (No. 3 Pop, No. 94 Country, No. 4 AC), "Deeper Than the Night" (No. 11 Pop, No. 87 Country, No. 4 AC), and the title track (No. 52 Pop) all demonstrated a more aggressive and uptempo sound for Newton-John. (The "Totally Hot" single was remixed for commercial release, adding an instrumental bridge that lengthened the song by over thirty seconds from the original album track. As well, "Deeper Than the Night" was remixed to 4:56 and released in Europe on a 12" disco single format.) Newton-John filmed promotional videos for all three singles and wrote two of the album's tracks, "Borrowed Time" and "Talk to Me".
Document 8: Gold (Olivia Newton-John album): Olivia Newton-John: Gold is a double album of Olivia Newton-John's greatest hits, released in 2005. It contains all but one of her solo "Billboard" Hot 100 hits (excluding "I Need Love") and is the first CD to contain the track "Fool Country" (a B-side to "Magic" and contained in the film "Xanadu", but not available on the soundtrack). The album is considered the most thorough of all of Newton-John's many compilation albums.
Document 9: Magic: The Very Best of Olivia Newton-John: Magic: The Very Best of Olivia Newton-John is a 2001 greatest hits compilation from Olivia Newton-John. This was the first compilation from Newton-John to include all 15 of her Top 10 hits on the "Billboard" Hot 100 and the first Newton-John album to include "The Grease Megamix".
Document 10: Nothing's Gonna Stop Us Now: "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).
Document 11: John Farrar: John Clifford Farrar ( ; born 8 November 1945) is an Australian-born music producer, songwriter, arranger, singer and guitarist. As a musician, Farrar is a former member of several rock and roll groups including The Mustangs (1963–64), The Strangers (1964–70), Marvin, Welch & Farrar (1970–73), and The Shadows (1973–76); in 1980 he released a solo eponymous album. As a songwriter and producer he worked with Olivia Newton-John from 1971 to 1989. He wrote her number-one hit singles: "Have You Never Been Mellow" (1975), "You're the One That I Want" (1978 duet with John Travolta), "Hopelessly Devoted to You" (1978), and "Magic" (1980). He also produced the majority of her recorded material during that time including her number-one albums, "If You Love Me, Let Me Know" (1974), "Have You Never Been Mellow" (1975) and "Olivia's Greatest Hits Vol. 2" (1982); and he was a co-producer of "" (1978) – the soundtrack for the film of the same name. Farrar also produced Newton-John's first United States number-one hit single, "I Honestly Love You", which was awarded the Grammy Award for Record of the Year in 1975. In 1969 Farrar married fellow Australian singer, Pat Carroll – formerly Newton-John's singing partner. In July 1970 Farrar and Carroll relocated to the United Kingdom and from late 1975 they have resided in the US. They are the parents of Sam Farrar (Phantom Planet bassist and Maroon 5 touring member) and Max Farrar (Golden Ghost guitarist and keyboardist).
Document 12: Chris Robinson (singer): Christopher Mark "Chris" Robinson (born December 20, 1966) is an American musician. He was the singer of the rock and roll band The Black Crowes and brother of its guitarist Rich Robinson.
Document 13: Magic (Olivia Newton-John song): "Magic" is a 1980 song performed by Olivia Newton-John, from the soundtrack to the film "Xanadu". The song was number 1 on the US "Billboard" Hot 100 for four weeks beginning on August 2, 1980. On August 30, it was displaced from the top by "Sailing" by Christopher Cross. It was her 25th American chart hit, and her 10th of 12 records which went Gold or higher.
Document 14: Chris and Conrad: Chris and Conrad were an American contemporary Christian music duo from Lakeland, Florida, consisting of Chris Kuti and Conrad Johnson. In early 2009 the duo was named the "#2 Artist You Oughta Know" by CCM Magazine. "Lead Me to the Cross", a radio version of the worship song written by Brooke Fraser, was released in early 2009 as their first single. In August 2009, it reached #3 on "Billboard" magazine's top Christian Songs chart. "Lead Me to the Cross" was also their first #1 song on the Christian Radio Weekly Inspirational Chart on May 18, 2009 as well as the #1 song on the "Billboard" Soft AC/Inspirational Chart from July 20 to August 10, 2009.
Document 15: Southern Cross (Crosby, Stills and Nash song): "Southern Cross" is a song written by Stephen Stills, Rick Curtis, and Michael Curtis and performed by the rock band Crosby, Stills & Nash. It was featured on the band's "Daylight Again" album and was released as a single in September 1982. Stephen Stills sings lead vocals throughout, with Graham Nash joining the second verse. Because David Crosby did not rejoin the band until the album was already underway, his vocals are not featured on the album version of the song, although he did appear in the video and subsequently sang the song with the group in live performances. The single was a respectable success on the charts, reaching #18 on the "Billboard" Hot 100 for three weeks in late November and early December 1982.
ground_truth: Christopher Cross