Question: What is the county seat of the Florida county containing Marco Island?

full_context: Document 1: Fleming Island, Florida: Fleming Island is an unincorporated community and census-designated place (CDP) in Clay County, Florida, United States. It is located southwest of downtown Jacksonville, on the western side of the St. Johns River, off US 17. As of the 2010 census the Fleming Island CDP had a population of 27,126. Fleming Island's ZIP code became 32003 in 2004, giving it a different code from Orange Park, the incorporated town to the north.
Document 2: Marco Island, Florida: Marco Island is a city in Collier County, Florida, United States, located on an island by the same name in the Gulf of Mexico off the coast of Southwest Florida. It is a principal city of the Naples -- Marco Island Metropolitan Statistical Area. The population was 16,413 at the 2010 census.
Document 3: Midway, Santa Rosa County, Florida: Midway is an unincorporated community in southern Santa Rosa County, Florida, United States. It is part of the Pensacola–Ferry Pass–Brent Metropolitan Statistical Area. The area, which is also known as Woodlawn Beach (which is now, as of 2010, its own CDP surrounded by Midway), is located approximately halfway between the communities of Gulf Breeze and Navarre, on the Fairpoint Peninsula. Its actual boundaries vary from source to source, but unofficially include most areas from the intersection of Soundside Drive with U.S. Highway 98, eastward until Highway 98 becomes Navarre Parkway.
Document 4: Naples, Florida: Naples is a city in Collier County, Florida, United States. As of 2015, the city's population was about 20,600. Naples is a principal city of the Naples - Marco Island, Florida Metropolitan Statistical Area, which had a population of about 322,000 as of 2015. Naples is one of the wealthiest cities in the United States, with the sixth highest per capita income in the country, and the second highest proportion of millionaires per capita in the US. Real estate is among the most expensive in the country, with houses for sale in excess of $40 million.
Document 5: Florida: Florida i/ˈflɒrɪdə/ (Spanish for "flowery land") is a state located in the southeastern region of the United States. The state is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia, to the east by the Atlantic Ocean, and to the south by the Straits of Florida and the sovereign state of Cuba. Florida is the 22nd most extensive, the 3rd most populous, and the 8th most densely populated of the United States. Jacksonville is the most populous city in Florida, and the largest city by area in the contiguous United States. The Miami metropolitan area is the eighth-largest metropolitan area in the United States. Tallahassee is the state capital.
Document 6: Miramar, Florida: Miramar is a city in Broward County, Florida, United States. As of the 2010 census, the population was 122,041. It is a principal city of the Miami metropolitan area, which is home to over 6 million people.
Document 7: Naples (CDP), Maine: Naples is a census-designated place (CDP) in the town of Naples in Cumberland County, Maine, United States. The population of the CDP was 428 at the 2010 census.
Document 8: Ochopee, Florida: Ochopee is an unincorporated community in Collier County, Florida, United States. It is located to the east of the intersection of US 41 and State Road 29, near Carnestown. The community is part of the Naples–Marco Island Metropolitan Statistical Area.
Document 9: Ave Maria, Florida: Ave Maria, Florida, United States, is a planned college town currently under development in Collier County, near Immokalee and Naples.
Document 10: Miami: Miami (/maɪˈæmi/; Spanish pronunciation: [maiˈami]) is a city located on the Atlantic coast in southeastern Florida and the seat of Miami-Dade County. The 44th-most populated city proper in the United States, with a population of 430,332, it is the principal, central, and most populous city of the Miami metropolitan area, and the second most populous metropolis in the Southeastern United States after Washington, D.C. According to the U.S. Census Bureau, Miami's metro area is the eighth-most populous and fourth-largest urban area in the United States, with a population of around 5.5 million.
Document 11: East Naples, Florida: East Naples is an unincorporated community in Collier County, Florida, United States. East Naples has been the county seat since 1962, when the Collier County Courthouse was moved from Everglades (see Old Collier County Courthouse).
Document 12: Pinellas County, Florida: Pinellas County is a county located in the state of Florida. As of the 2010 census, the population was 916,542. The county is part of the Tampa -- St. Petersburg -- Clearwater, Florida Metropolitan Statistical Area. Clearwater is the county seat, and St. Petersburg is the largest city.
Document 13: Pine Level, DeSoto County, Florida: In 1887, Pine Level was included in the new DeSoto County carved out of Manatee County and it became the county seat of the new county and the seat of Manatee County was returned to Manatee. In 1889, however, the county seat of DeSoto County was moved from Pine Level to Arcadia.
Document 14: Miami: The city proper is home to less than one-thirteenth of the population of South Florida. Miami is the 42nd-most populous city in the United States. The Miami metropolitan area, which includes Miami-Dade, Broward and Palm Beach counties, had a combined population of more than 5.5 million people, ranked seventh largest in the United States, and is the largest metropolitan area in the Southeastern United States. As of 2008[update], the United Nations estimates that the Miami Urban Agglomeration is the 44th-largest in the world.
Document 15: East Lake, Pinellas County, Florida: East Lake is a census-designated place (CDP) in Pinellas County, Florida, United States. The population was 30,962 at the 2010 census. It was one of the last areas in the densely populated county to develop. It is often confused with East Lake in neighboring Hillsborough County.
ground_truth: East Naples
sub_queries: what county is marco island in in florida Answer: Collier County
Collier County >> capital Answer: East Naples