Question: How many counties of Ireland are in the country of citizenship of Hill of Thieves' performer?

full_context: Document 1: Carly Simon: After a brief stint with her sister Lucy Simon as duo group the Simon Sisters, she found great success as a solo artist with her 1971 self-titled debut album "Carly Simon", which won her the Grammy Award for Best New Artist, and spawned her first Top 10 single "That's the Way I've Always Heard It Should Be". She achieved international fame with her third album "No Secrets" which sat firmly at No. 1 on the "Billboard" 200 for five weeks and spawned the worldwide hit "You're So Vain", for which she received three Grammy nominations, including Record of the Year and Song of the Year. With her 1988 hit "Let the River Run", from the film "Working Girl", she became the first artist to win a Grammy Award, an Academy Award, and a Golden Globe Award for a song composed and written, as well as performed, entirely by a single artist.
Document 2: British Empire: In 1919, the frustrations caused by delays to Irish home rule led members of Sinn Féin, a pro-independence party that had won a majority of the Irish seats at Westminster in the 1918 British general election, to establish an Irish assembly in Dublin, at which Irish independence was declared. The Irish Republican Army simultaneously began a guerrilla war against the British administration. The Anglo-Irish War ended in 1921 with a stalemate and the signing of the Anglo-Irish Treaty, creating the Irish Free State, a Dominion within the British Empire, with effective internal independence but still constitutionally linked with the British Crown. Northern Ireland, consisting of six of the 32 Irish counties which had been established as a devolved region under the 1920 Government of Ireland Act, immediately exercised its option under the treaty to retain its existing status within the United Kingdom.
Document 3: Billy Connolly: In 1985, he divorced Iris Pressagh, his wife of sixteen years (they had separated four years earlier) and he was awarded custody of their children Jamie and Cara. That same year, he performed An Audience with..., which was videotaped at the South Bank Television Centre in front of a celebrity audience for ITV. The uncut, uncensored version was subsequently released on video. In July 1985, he performed at the Wembley leg of Live Aid, immediately preceding Elton John.
Document 4: Never in a Million Years (Cara Dillon song): "Never In A Million Years" is the lead single release from After The Morning, the third album by Cara Dillon. The single was released as a promo for radio stations in the UK and Ireland. The single was also released exclusively by iTunes as a digital download a week prior to the release of "After the Morning", where it climbed to #39 in the iTunes Top 100.
Document 5: After the Morning (Cara Dillon album): "After the Morning" is the third solo album from folk artist Cara Dillon. It was recorded at their home studio in Frome, Somerset, Mayfair, Kore, Amberville and Sun Street Studios. The strings and brass were recorded in Prague. Similar to her previous albums, "After the Morning" was produced by Sam Lakeman, her husband and musical partner. Additional production was by Mike 'Spike' Drake, who also mixed the album. The album features the singles "Never in a Million Years", and the double A-side of "I Wish You Well" and "This Time".
Document 6: Cowboys, Sisters, Rascals & Dirt: Cowboys, Sisters, Rascals & Dirt is an album by American country music artist Waylon Jennings, released in 1993 through RCA Nashville and Ode 2 Kids Records. A concept album, it features Jennings singing compositions intended for children. All of the tracks on the record were written by the singer himself. The final song is dedicated to Jennings' son, Shooter. While a music video for "Cowboy Movies" was filmed, the album itself did not chart. The album was produced by Cliff "Barny" Robertson, whose daughters, Becky, Emily and Joanna, sing backing vocals on it. In the mid-2000s, the daughters founded a group called Carter's Chord.
Document 7: A Girl Called Dusty: Dusty Springfield had been a member of the girl group The Lana Sisters from 1958 to 1960, and the folk-pop trio The Springfields from 1960–1963, in the latter case with her brother Tom Springfield. While on tour in the US in the early 1960s she was exposed to soul music, which was to have a profound impact on her subsequent life and career. Although The Springfields were moderately successful, with songs such as "Island of Dreams", "Bambino" and "Silver Threads And Golden Needles" (a No. 16 US country hit), their style of music limited the wide range of material that Dusty Springfield wanted to sing. Therefore, in 1963, Springfield decided to begin a career as a solo singer.
Document 8: Poor Man's Heaven: Seth Lakeman's fourth album, Poor Man's Heaven (not to be confused with the EP of the same name released in late 2007), was released on 30 June 2008, entering the UK Album Charts at number 8. Taking over 10 months to finalise, many of the tracks on the album have been part of Lakeman's live set since the second half of 2006, the initial tracks performed being 'Poor Man's Heaven' and 'Race to be King', but this expanded towards the end of the tour, with new tracks continuing to be previewed throughout 2007 and into 2008.
Document 9: Aftermath of World War I: Ireland: Irish Free State (approximately five - sixths of the island) gained independence from the United Kingdom (but still part of the British Empire)
Document 10: Mountain Sounds: Mountain Sounds is a joint recording project composed of Tim Hoyt and Franc Castillejos, citizens of the United States and Guatemala respectively. The pair originally met and began playing together in Florida where Castillejos had moved for school, but reconnected several years later after he returned to Guatemala and Hoyt moved to Portland, Oregon. Their debut album was self-produced in an unused orphanage originally built by Castillejos' parents in the Cerro Alux Mountains outside of Guatemala City. It was mixed by Matt Wilbur of The Vanguard Room and mastered by Troy Glessner. The first track from the album, "Lion or the Bee", was premiered by Rolling Stone as a Daily Download, and the full album was made available by Beats Per Minute as a free stream in advance of its official release date of March 26, 2013.
Document 11: Republic of Ireland: In accordance with the treaty, on 6 December 1922 the entire island of Ireland became a self - governing dominion called the Irish Free State (Saorstát Éireann). Under the Constitution of the Irish Free State, the Parliament of Northern Ireland had the option to leave the Irish Free State one month later and return to the United Kingdom. During the intervening period, the powers of the Parliament of the Irish Free State and Executive Council of the Irish Free State did not extend to Northern Ireland. Northern Ireland exercised its right under the treaty to leave the new dominion and rejoined the United Kingdom on 8 December 1922. It did so by making an address to the King requesting, ``that the powers of the Parliament and Government of the Irish Free State shall no longer extend to Northern Ireland. ''The Irish Free State was a constitutional monarchy sharing a monarch with the United Kingdom and other dominions of the British Commonwealth. The country had a governor - general (representing the monarch), a bicameral parliament, a cabinet called the`` Executive Council'', and a prime minister called the President of the Executive Council.
Document 12: Cara Dillon: Cara Elizabeth Dillon (born 21 July 1975, Dungiven, County Londonderry, Northern Ireland) is an Irish folk singer. In 1995, she joined the folk supergroup Equation and signed a record deal with Warners Music Group. After leaving the group, she collaborated with Sam Lakeman under the name Polar Star. In 2001, she released her first solo album, "Cara Dillon", which featured traditional songs and two original Dillon\Lakeman compositions. The album was an unexpected hit in the folk world, with Dillon receiving four nominations at the 2002 BBC Radio 2 Folk Awards.
Document 13: History of Ireland: In 1922, after the Irish War of Independence and the Anglo - Irish Treaty, most of Ireland seceded from the United Kingdom to become the independent Irish Free State, which after the 1937 constitution, began to call itself Ireland. The six northeastern counties, known as Northern Ireland, remained within the United Kingdom. The Irish Civil War followed soon after the War of Independence. The history of Northern Ireland has since been dominated by sporadic sectarian conflict between (mainly Catholic) Irish nationalists and (mainly Protestant) unionists. This conflict erupted into the Troubles in the late 1960s, until peace was achieved with the Belfast Agreement thirty years later.
Document 14: History of Ireland: Unwilling to negotiate any understanding with Britain short of complete independence, the Irish Republican Army, the army of the newly declared Irish Republic, waged a guerilla war (the Irish War of Independence) from 1919 to 1921. In the course of the fighting and amid much acrimony, the Fourth Government of Ireland Act 1920 implemented Home Rule while separating the island into what the British government's Act termed ``Northern Ireland ''and`` Southern Ireland''. In July 1921 the Irish and British governments agreed to a truce that halted the war. In December 1921 representatives of both governments signed an Anglo - Irish Treaty. The Irish delegation was led by Arthur Griffith and Michael Collins. This abolished the Irish Republic and created the Irish Free State, a self - governing Dominion of the Commonwealth of Nations in the manner of Canada and Australia. Under the Treaty, Northern Ireland could opt out of the Free State and stay within the United Kingdom: it promptly did so. In 1922 both parliaments ratified the Treaty, formalising independence for the 26 - county Irish Free State (which renamed itself Ireland in 1937, and declared itself a republic in 1949); while the 6 - county Northern Ireland, gaining Home Rule for itself, remained part of the United Kingdom. For most of the next 75 years, each territory was strongly aligned to either Catholic or Protestant ideologies, although this was more marked in the six counties of Northern Ireland.
Document 15: Hill of Thieves: Hill of Thieves is the fourth solo album by Irish folk singer Cara Dillon. It is her first full-length release on Charcoal Records, the label formed in 2008 with her musical partner and husband Sam Lakeman. The album was recorded and produced by Sam and first became available in October 2008 at their live concerts. It is also the first release since she gave birth to their twin boys Noah and Colm at 26 weeks, after going into labour onstage at the Swindon Arts Centre, UK. It has been the most successful of her first four albums in relation to chart performance, entering at No. 7 in the UK Indie Album Charts (see below for more.)
ground_truth: six
sub_queries: Hill of Thieves >> performer Answer: Cara Dillon
Cara Dillon >> country of citizenship Answer: Northern Ireland
How many counties of Ireland are in Northern Ireland ? Answer: six