Question: What county is Millbrook, in the state where the most successful artist of the season of American Idol is from, located?

full_context: Document 1: American Idol: Despite being eliminated earlier in the season, Chris Daughtry (as lead of the band Daughtry) became the most successful recording artist from this season. Other contestants, such as Hicks, McPhee, Bucky Covington, Mandisa, Kellie Pickler, and Elliott Yamin have had varying levels of success.
Document 2: American Idol: Theories given for the success of Southerners on Idol have been: more versatility with musical genres, as the Southern U.S. is home to several music genre scenes; not having as many opportunities to break into the pop music business; text-voting due to the South having the highest percentage of cell-phone only households; and the strong heritage of music and singing, which is notable in the Bible Belt, where it is in church that many people get their start in public singing. Others also suggest that the Southern character of these contestants appeal to the South, as well as local pride. According to season five winner Taylor Hicks, who is from the state of Alabama, "People in the South have a lot of pride ... So, they're adamant about supporting the contestants who do well from their state or region."
Document 3: American Idol: Both finalists found success after the show, but Aiken out-performed Studdard's coronation song "Flying Without Wings" with his single release from the show "This Is the Night", as well as in their subsequent album releases. The fourth-place finisher Josh Gracin also enjoyed some success as a country singer.
Document 4: Millbrook, North Carolina: Millbrook, North Carolina, USA, was a village in Wake County at that time in the intersection of then Wake Forest Road and then Main Street, which is now part of East Millbrook Road. However, the growth of Raleigh since the 1970s has swallowed up the village. Milbrook High School in Raleigh is named after the village and is located in what used to be Millbrook.
Document 5: McCullers Crossroads, North Carolina: McCullers Crossroads is an unincorporated community in southern Wake County, North Carolina, United States, located midway between of Raleigh and Fuquay Varina. It lies at the intersection of US 401 (Fayetteville Road) and SR 1010 (Ten-Ten Road). Wake Technical Community College has its main campus nearby.
Document 6: American Idol: American Idol is an American singing competition television series created by Simon Fuller, produced by FremantleMedia North America and 19 Entertainment, and distributed by FremantleMedia North America. It began airing on Fox on June 11, 2002, and ended its first - run on April 7, 2016. On March 11, 2018, the show will make its debut on ABC. It started off as an addition to the Idols format based on the British series Pop Idol, and became one of the most successful shows in the history of American television. The concept of the series involves discovering recording stars from unsigned singing talents, with the winner determined by the viewers in America through telephones, Internet, and SMS text voting. Winners chosen by viewers in its fifteen seasons were Kelly Clarkson, Ruben Studdard, Fantasia, Carrie Underwood, Taylor Hicks, Jordin Sparks, David Cook, Kris Allen, Lee DeWyze, Scotty McCreery, Phillip Phillips, Candice Glover, Caleb Johnson, Nick Fradiani, and Trent Harmon.
Document 7: American Idol: As one of the most successful shows on U.S. television history, American Idol has a strong impact not just on television, but also in the wider world of entertainment. It helped create a number of highly successful recording artists, such as Kelly Clarkson, Daughtry and Carrie Underwood, as well as others of varying notability.
Document 8: American Idol: Since the show's inception in 2002, ten of the fourteen Idol winners, including its first five, have come from the Southern United States. A large number of other notable finalists during the series' run have also hailed from the American South, including Clay Aiken, Kellie Pickler, and Chris Daughtry, who are all from North Carolina. In 2012, an analysis of the 131 contestants who have appeared in the finals of all seasons of the show up to that point found that 48% have some connection to the Southern United States.
Document 9: American Idol: Ruben Studdard emerged as the winner, beating Clay Aiken by a small margin. Out of a total of 24 million votes, Studdard finished just 134,000 votes ahead of Aiken. This slim margin of victory was controversial due to the large number of calls that failed to get through. In an interview prior to season five, executive producer Nigel Lythgoe indicated that Aiken had led the fan voting from the wildcard week onward until the finale.
Document 10: Raleigh, North Carolina: Midtown Raleigh is a residential and commercial area just North of the I-440 Beltline and is part of North Raleigh. It is roughly framed by Glenwood/Creedmoor Road to the West, Wake Forest Road to the East, and Millbrook Road to the North. It includes shopping centers such as North Hills and Crabtree Valley Mall. It also includes North Hills Park and part of the Raleigh Greenway System. The term was coined by the Greater Raleigh Chamber of Commerce, developer John Kane and planning director Mitchell Silver. The News & Observer newspaper started using the term for marketing purposes only. The Midtown Raleigh Alliance was founded on July 25, 2011 as a way for community leaders to promote the area.
Document 11: American Idol: Chris Daughtry's performance of Fuel's "Hemorrhage (In My Hands)" on the show was widely praised and led to an invitation to join the band as Fuel's new lead singer, an invitation he declined. His performance of Live's version of "I Walk the Line" was well received by the judges but later criticized in some quarters for not crediting the arrangement to Live. He was eliminated at the top four in a shocking result.
Document 12: American Idol: In what was to become a tradition, Clarkson performed the coronation song during the finale, and released the song immediately after the season ended. The single, "A Moment Like This", went on to break a 38-year-old record held by The Beatles for the biggest leap to number one on the Billboard Hot 100. Guarini did not release any song immediately after the show and remains the only runner-up not to do so. Both Clarkson and Guarini made a musical film, From Justin to Kelly, which was released in 2003 but was widely panned. Clarkson has since become the most successful Idol contestant internationally, with worldwide album sales of more than 23 million.
Document 13: Miles, North Carolina: Miles is an unincorporated community in Orange County, North Carolina, United States, located on U.S. Route 70, north of Buckhorn.
Document 14: American Idol: The show itself is popular in the Southern United States, with households in the Southeastern United States 10% more likely to watch American Idol during the eighth season in 2009, and those in the East Central region, such as Kentucky, were 16 percent more likely to tune into the series. Data from Nielsen SoundScan, a music-sales tracking service, showed that of the 47 million CDs sold by Idol contestants through January 2010, 85 percent were by contestants with ties to the American South.
Document 15: Raleigh, North Carolina: West Raleigh lies along Hillsborough Street and Western Boulevard. The area is bordered to the west by suburban Cary. It is home to North Carolina State University, Meredith College, Pullen Park, Pullen Memorial Baptist Church, Cameron Village, Lake Johnson, the North Carolina Museum of Art and historic Saint Mary's School. Primary thoroughfares serving West Raleigh, in addition to Hillsborough Street, are Avent Ferry Road, Blue Ridge Road, and Western Boulevard. The PNC Arena is also located here adjacent to the North Carolina State Fairgrounds. These are located approximately 2 miles from Rex Hospital.
ground_truth: Wake County
sub_queries: Who was the most successful artist from this season? Answer: Chris Daughtry
What state is American Idol contestant Chris Daughtry from? Answer: North Carolina
What state is Millbrook, North Carolina located? Answer: Wake County