Question: How many No. 1 hits has the writer of  the song Ballad of Forty Dollars written ?

Context paragraphs:
Harlequin Melodies: Harlequin Melodies is the 1968 debut album by singer-songwriter Mickey Newbury.  At the time, Newbury was making an impact as an incredible and successful songwriter in Nashville, signed by Acuff-Rose Publishing.  At one point he had four #1 hits on different charts for Eddy Arnold, Solomon Burke, The First Edition, and Andy Williams, and he had written hits for several others.  Produced by Elvis Presley producer Felton Jarvis, "Harlequin Melodies" concentrates on Newbury's versions of his hit songs; nearly every song on the album has been covered by other artists.

Ballad of Forty Dollars: "Ballad of Forty Dollars" is a song written and recorded by American country music artist Tom T. Hall.  It was released in October 1968 as the fourth and final single from the album of the same name, "Ballad of Forty Dollars".  The song was Hall's first top 10 on the U.S. country singles chart, peaking at number 4 on both the U.S. chart and the Canadian country singles chart.

Gerry Goffin: Gerald Goffin (February 11, 1939 – June 19, 2014) was an American lyricist.  Writing initially with his wife Carole King, he co-wrote many international pop hits of the early and mid-1960s, including the US No.1 hits "Will You Love Me Tomorrow", "Take Good Care of My Baby", "The Loco-Motion", and "Go Away Little Girl".  It was later said of Goffin that his gift was "to find words that expressed what many young people were feeling but were unable to articulate."

A Thing About You: "A Thing About You" is a song by Swedish pop music duo Roxette, released on 14 October 2002 as the lead single from the duo's second greatest hits compilation album, "The Ballad Hits" (2002).  Their first release following vocalist Marie Fredriksson's brain tumour diagnosis, the song charted in the top forty of numerous national record charts, including Austria, Belgium, Brazil, Germany, Italy, Spain, Sweden, Switzerland and Taiwan.  The song received moderate airplay in the United Kingdom via BBC Radio 2, and remains their last single to enter the UK Singles Chart, peaking at number 77.  Its music video was directed by longtime collaborator Jonas Åkerlund.

Unica (album): Unica (Only one) is India's ninth Studio Album.  India released Unica under record label Top Stop Music which was founded by grammy winner Sergio George.  The album features her 7th #1 hit on the Tropical Billboard Charts, "Estupida", which made India the female with the most #1 hits on the Tropical Billboard Charts.  Estupida was her first single off the album, released in two versions, one salsa and the other a ballad version.  The album was released on, June 1, 2010.  India's album release party was held in San Juan, Puerto Rico.

Paul Overstreet: Paul Lester Overstreet (born March 17, 1955) is an American country music singer and songwriter.  He recorded 10 studio albums between 1982 and 2005, and charted 16 singles on the "Billboard" country charts, including two No. 1 hits.  He has also written singles for several other country acts, including No. 1 hits for Randy Travis, Blake Shelton, and Keith Whitley, as well as hits for The Judds and Kenny Chesney.

Tom T. Hall: Thomas "Tom T." Hall (born May 25, 1936 in Olive Hill, Kentucky) is an American country music songwriter, singer, instrumentalist, novelist, and short-story writer.  He has written 11 No. 1 hit songs, with 26 more that reached the Top 10, including the No. 1 international pop crossover smash "Harper Valley PTA" and the hit "I Love", which reached No. 12 on the "Billboard" Hot 100.  He became known to fans as "The Storyteller," thanks to his storytelling skills in his songwriting.

Hits (Phil Collins album): Hits (stylized as ...Hits), released in 1998 and again in 2008, following the success of "In the Air Tonight" on the Cadbury ad campaign, is the first greatest hits album by English singer-songwriter Phil Collins.  The collection included fourteen Top 40 hits, including seven American number 1 songs, spanning from the albums "Face Value" (1981) through "Dance into the Light" (1996).  One new Collins recording, a cover of Cyndi Lauper's "True Colors", also appeared on the collection and was a popular song on adult contemporary stations.  "Hits" was also the first Phil Collins album to include four songs originally recorded for motion pictures (all of them U.S. number 1 hits) as well as his popular duet with Philip Bailey, "Easy Lover" (a UK number 1 hit).

How I Got to Memphis: "How I Got to Memphis" is the shortened title used by American country music singer Bobby Bare, of a song whose full title is: "That's How I Got to Memphis" written by Tom T. Hall and which appears on his 1969 album: 'Ballad Of Forty Dollars & His Other Great Songs'.  Bobby Bare's album "This Is Bare Country" was released in August 1970 and this track was taken from it as a single.  Other performers of this song use the full title: That's How I Got to Memphis.

He's a Heartache (Looking for a Place to Happen): "He's a Heartache (Looking for a Place to Happen)" is a song written by Jeff Silbar and Larry Henley, and recorded by American country music artist Janie Fricke.  It was released in May 1983 as the third single from the album "It Ain't Easy".  "He's a Heartache (Looking for a Place to Happen)" was Janie Fricke's third number one on the country chart.  Overall in her career, she scored 8 No. 1 hits.  The song was introduced to the public in 1983, along with a couple of other hits that went to number 1, like the song "It Ain't Easy Bein' Easy".  Soon after it was released, "He's a Heartache" went to the number 1 spot.  The song was one of many Countrypolitan songs Fricke recorded and became successful with during her career.

Supporting paragraphs: Ballad of Forty Dollars Tom T. Hall
Answer: 11