Question: What is the capital of the county where Daniel Agnew was born?

full_context: Document 1: James Carnahan: Born in Cumberland County, Pennsylvania, Carnahan was an 1800 graduate of the school when it was called College of New Jersey. He held positions at churches in New Jersey and New York until moving to Georgetown, District of Columbia in 1814 to teach school for nine years.
Document 2: Madeira High School: Madeira High School is the public high school in the city of Madeira, Ohio near Cincinnati. Madeira High School is the only high school in the Madeira City Schools District.
Document 3: Aamer Anwar: Anwar was born in England and moved to Scotland in 1986 to study mechanical engineering at the University of Glasgow for a future in the Royal Air Force. He became a student activist and led a campaign against alleged racism at the city's Dental Hospital. This eventually saw the introduction of anonymous marking across all faculties at the University.
Document 4: 2nd Legislative District (New Jersey): New Jersey's 2nd Legislative District is one of 40 in the state, covering the Atlantic County municipalities of Absecon City, Atlantic City, Brigantine City, Buena Borough, Buena Vista Township Egg Harbor City, Egg Harbor Township, Folsom Borough, Hamilton Township, Linwood City, Longport Borough, Margate City, Mullica Township, Northfield City, Pleasantville City, Somers Point City and Ventnor City as of the 2011 apportionment. Except for an eight-year period from 1974 until 1982, the 2nd District is exclusively made up of municipalities from Atlantic County since 1967.
Document 5: Daniel Pipes: The son of Irene (née Roth) and Richard Pipes, Daniel Pipes was born in Boston, Massachusetts, in 1949. His parents had each fled German-occupied Poland with their families, and they met in the United States. His father, Richard Pipes, was a historian at Harvard University, specializing in Russia, and Daniel Pipes grew up primarily in the Cambridge, Massachusetts area.
Document 6: Hunterdon Central Regional High School: Hunterdon Central Regional High School is a comprehensive, four-year public high school, and regional school district that serves students from five municipalities in east central Hunterdon County, New Jersey, United States. Students hail from Delaware Township, East Amwell Township, Flemington, Raritan Township and Readington Township.
Document 7: Daniel A. Whelton: Born in Boston to Irish (County Cork) natives Daniel and Ann Curry Whelton, he lived in Boston's West End at 69 Billerica Street. When he was five years old, Whelton's father died and he was raised by his mother, who worked as a pastry cook for the admiral commanding the Charlestown Navy Yard. Whelton received his education at St. Mary's School, graduating in 1886. After Whelton graduated from St. Mary's, Whelton attended the Evening High School for a few months.
Document 8: Lorain City School District: The Lorain City School District is a public school district serving the city of Lorain, Ohio, which is located 25 miles west of Cleveland. The district is the tenth largest urban school district in the State of Ohio.
Document 9: 6th Legislative District (New Jersey): New Jersey's 6th Legislative District is one of 40 in the New Jersey Legislature, covering the Burlington County municipality of Maple Shade Township and the Camden County municipalities of Berlin Township, Cherry Hill Township, Collingswood Borough, Gibbsboro Borough, Haddon Township, Haddonfield Borough, Hi-Nella Borough, Merchantville Borough, Oaklyn Borough, Pennsauken Township, Somerdale Borough, Stratford Borough, Tavistock Borough and Voorhees Township as of the 2011 apportionment.
Document 10: 15th Legislative District (New Jersey): New Jersey's 15th Legislative District is one of 40 in the New Jersey Legislature, covering the Hunterdon County municipalities of East Amwell Township, Lambertville City and West Amwell Township; and the Mercer County municipalities of Ewing Township, Hopewell Borough, Hopewell Township, Lawrence Township, Pennington Borough, Trenton City and West Windsor Township.
Document 11: Mariemont City School District: The Mariemont City School District is located east of Cincinnati, Ohio, United States and includes the villages of Fairfax, Terrace Park, Mariemont, and the unincorporated areas of Plainville and Williams' Meadow. The district can trace its founding to April 14, 1879.
Document 12: 8th Legislative District (New Jersey): New Jersey's 8th Legislative District is one of 40 in the New Jersey Legislature, covering the Atlantic County municipality of Hammonton; the Burlington County municipalities of Eastampton Township, Evesham Township, Hainesport Township, Lumberton Township, Mansfield Township, Medford Township, Medford Lakes Borough, Mount Holly Township, Pemberton Borough, Pemberton Township, Shamong Township, Southampton Township, Springfield Township, Westampton Township and Woodland Township; and the Camden County municipalities of Berlin Borough, Pine Hill Borough, Pine Valley Borough and Waterford Township as of the 2011 apportionment.
Document 13: Daniel Agnew: Agnew was born at Trenton, New Jersey on January 5, 1809, and was of Irish/Welsh heritage. His father was a Princeton-educated doctor; his mother was part of the Howell family that was prominent in New Jersey affairs of that era. The family moved to Pittsburgh, when Agnew was about four years old. Agnew grew up there, attended the Western University of Pennsylvania (now the University of Pittsburgh), and then studied law with two experienced attorneys. He was admitted to the bar in 1829, at age 20 and began practicing law.
Document 14: Marietta City School District: The Marietta City School District is a public school district that serves students in grades K-12 who live in and around Marietta, a city in Washington County, Ohio, United States. The district has four elementary schools (Harmar, Phillips, Putnam, and Washington), one middle school (Marietta Middle School), and one high school (Marietta High School), and serves the communities of Marietta, Reno, Devola, Harmar, and Oak Grove.
Document 15: Celina City School District: The Celina City School District is a public school district in Mercer County, Ohio, United States, based in Celina, Ohio.
ground_truth: Celina
sub_queries: Daniel Agnew >> place of birth Answer: Trenton
Trenton >> located in the administrative territorial entity Answer: Mercer County
Mercer County >> capital Answer: Celina