Question: What is the seat of the county in which Gray is located?

full_context: Document 1: Fort Scott National Cemetery: Fort Scott National Cemetery is a United States National Cemetery located in Fort Scott, in Bourbon County, Kansas. Administered by the United States Department of Veterans Affairs, it encompasses , and as of 2014, had more than 7,000 interments. It is one of three national cemeteries in Kansas (the other two being Fort Leavenworth and Leavenworth).
Document 2: Springfield National Cemetery: Springfield National Cemetery is a United States National Cemetery located in the city of Springfield, in Greene County, Missouri. Administered by the United States Department of Veterans Affairs, it encompasses , and as of the end of 2005, had 14,685 interments.
Document 3: Grays River Covered Bridge: The Grays River Covered Bridge is a one-lane covered bridge over the Grays River in western Wahkiakum County, Washington. It is the only covered bridge still in use as a public highway in Washington State. The bridge was added to the National Register of Historic Places in 1971.
Document 4: Jonesborough, Tennessee: Jonesborough (historically also Jonesboro) is a town in, and the county seat of, Washington County, Tennessee, in the southeastern United States. The population was 5,975 at the 2010 census. It is "Tennessee's oldest town".
Document 5: Fort Logan National Cemetery: Fort Logan National Cemetery is a United States National Cemetery in Denver, Colorado. Fort Logan was named after Union General John A. Logan, commander of US Volunteer forces during the American Civil War. It contains and has over 122,000 interments as of 2014. It was listed on the National Register of Historic Places in 2016.
Document 6: Oakfield Cemetery (Wantagh, New York): Oakfield Cemetery (also known as the Old Burying Ground) is a 70 X 438 tract of land located on Oakfield Avenue in Wantagh, New York, in the United States. It is covered with grass and lined with sporadically placed oak trees, and is surrounded by residential homes. Backyard fencing of homes also surrounds the land on both sides. The cemetery is now kept locked to keep vandals out. It was first deeded as a cemetery on March 18, 1851, and is noted as the second cemetery in the area to be used by Black residents of Wantagh, many of whom were descendants of freed Jackson family slaves. It is most noted as being the final resting place of four black Civil War soldiers. The Town of Hempstead takes care of this property. It is nicknamed by area residents as "Indian Burying Ground."
Document 7: Graymoor-Devondale, Kentucky: Graymoor-Devondale is a home rule-class city in Jefferson County, Kentucky, United States. The city is the result of the merger of the former cities of Graymoor and Devondale. The population was 2,870 at the 2010 census.
Document 8: Grayson Valley, Alabama: Grayson Valley is an unincorporated community and census-designated place in Jefferson County, Alabama, United States. It is northwest from the Birmingham suburb of Trussville. At the 2010 census the population was 5,736.
Document 9: Andrew Johnson National Cemetery: The Andrew Johnson National Cemetery is a United States National Cemetery on the grounds of the Andrew Johnson National Historic Site in Greeneville, Tennessee. Established in 1906, the cemetery was built around the resting place of Andrew Johnson, the 17th President of the United States, and holds more than two thousand graves.
Document 10: Fayetteville National Cemetery: Fayetteville National Cemetery is a United States National Cemetery located on the southern side of the city of Fayetteville in Washington County, Arkansas. It encompasses nearly . As of 2013, around 8000 veterans were interred in this location, with approximately 200 new burials per year.
Document 11: Conway Cemetery State Park: Conway Cemetery State Park is a Arkansas state park in Lafayette County, Arkansas in the United States. Located on the former cotton plantation grounds of James Sevier Conway, the cemetery serves as Conway's final resting place. No recreational or visitors' amenities are available at the historic site. The site became a state park in 1986 as part of Arkansas's sesquicentennial.
Document 12: Grayson, California: Grayson is a census-designated place (CDP) in Stanislaus County, California, United States. The population was 952 at the 2010 census, down from 1,077 at the 2000 census. It is part of the Modesto Metropolitan Statistical Area.
Document 13: Central, Tennessee: Central is an unincorporated community and census-designated place (CDP) in western Carter County, Tennessee, United States. The population was 2,717 at the 2000 census and 2,279 at the 2010 census. It is part of the Johnson City Metropolitan Statistical Area, which is a component of the Johnson City–Kingsport–Bristol, TN-VA Combined Statistical Area – commonly known as the "Tri-Cities" region.
Document 14: Johnson City, Tennessee: Johnson City is a city in Washington, Carter, and Sullivan counties in the U.S. state of Tennessee, with most of the city being in Washington County. As of the 2010 census, the population of Johnson City was 63,152, and by 2015 the estimated population was 66,027, making it the ninth - largest city in the state.
Document 15: Gray, Tennessee: Gray is a census-designated place (CDP) in Washington County, Tennessee, United States and a rural suburb of Johnson City. It is part of the Johnson City Metropolitan Statistical Area, which is a component of the Johnson City–Kingsport–Bristol, TN-VA Combined Statistical Area – commonly known as the "Tri-Cities" region. The population was 1,222 at the 2010 census.
ground_truth: Fayetteville
sub_queries: Gray >> located in the administrative territorial entity Answer: Washington County
Washington County >> capital Answer: Fayetteville