Question: In the state with Pocahontas Mounds, in which county is Waterford?

full_context: Document 1: Midway, Tallahatchie County, Mississippi: Midway is a ghost town in Tallahatchie County, Mississippi, United States. Midway was located on the Cassidy Bayou east-northeast of Sumner.
Document 2: Pocahontas Mounds: Pocahontas Mounds (22 HI 500) is an archaeological site from the Plaquemine Mississippian culture in Hinds County, Mississippi, dating from 800 to 1300 CE. Two mounds from the site were added to the NRHP on two separate occasions, "Pocahontas Mound A" on November 25, 1969 as NRIS number 69000365 and "Pocahontas Mound B" on April 11, 1972 as NRIS number 72000694.
Document 3: Waterford, Virginia: Waterford is an unincorporated village in the Catoctin Valley of Loudoun County, Virginia, located along Catoctin Creek. Waterford is northwest of Washington, D.C., and northwest of Leesburg. The entire village and surrounding countryside is a National Historic Landmark District, noted for its well-preserved 18th and 19th-century character.
Document 4: Arledge Mounds I and II: Most unusual is the proximity of the mounds to each other — while many groups of mounds are known in Ohio, they are not typically connected at the base as these two mounds are; only the Arledge Mounds and the McMurray Mounds, which straddled the border between Franklin and Madison counties, are known to have been conjoined. Although these mounds have not been excavated, archaeologists have proposed that they were built by the Adena culture, who are known to have built the McMurray Mounds.
Document 5: Waterford, Mississippi: Waterford is an unincorporated community located in Marshall County, Mississippi, United States. It is a small town located between Holly Springs and Oxford on Highway 7. The city once had several small stores, shops and a cotton mill. Currently there is only one store. The city is also the home of Wall Doxey State Park and is also a part of the Mississippi National Forest.
Document 6: Florewood State Park: Florewood State Park, also known as Florewood River Plantation State Park, is a closed public recreation area in the U.S. state of Mississippi. The state park is located off U.S. Highway 82 on the western edge of Greenwood.
Document 7: North Carolina: North Carolina was inhabited for thousands of years by succeeding cultures of prehistoric indigenous cultures. Before 200 AD, they were building earthwork mounds, which were used for ceremonial and religious purposes. Succeeding peoples, including those of the ancient Mississippian culture established by 1000 AD in the Piedmont, continued to build or add on to such mounds. In the 500–700 years preceding European contact, the Mississippian culture built large, complex cities and maintained far-flung regional trading networks. Its largest city was Cahokia, located in present-day Illinois near the Mississippi River.
Document 8: Hardy, Mississippi: Hardy is an unincorporated community located in Grenada County, Mississippi and part of the Grenada Micropolitan Statistical Area . Hardy is approximately north of Grenada near Interstate 55.
Document 9: Mound Bottom: Mound Bottom is a prehistoric Native American complex in Cheatham County, Tennessee, located in the Southeastern United States. The complex, which consists of earthen platform and burial mounds, a 7-acre central plaza, and habitation areas, was occupied between approximately 1000 and 1300 AD, during the Mississippian period.
Document 10: Indian Mounds Park (Saint Paul, Minnesota): Indian Mounds Regional Park is a public park in Saint Paul, Minnesota, United States, featuring six prehistoric Native American burial mounds overlooking the Mississippi River. The oldest mounds were constructed 1,500 -- 2,000 years ago by people of the Hopewell tradition. Later the Dakota people interred their dead there as well. At least 31 more mounds were destroyed by development in the late 19th century. They were the tallest Native American mounds in Minnesota or Wisconsin (except for the unique 45 - foot (14 m) Grand Mound outside International Falls, Minnesota), and comprise one of the northwesternmost Hopewellian sites in North America. Indian Mounds Regional Park is a component of the Mississippi National River and Recreation Area, a unit of the National Park System. The Mounds Group is listed on the National Register of Historic Places. The 2014 nomination document provides a description of the archaeology and the context.
Document 11: Oakland County International Airport: Oakland County International Airport is a county-owned public-use airport located in Waterford Township, Oakland County, Michigan, United States. The airport is located approximately 1 mile from the center of Waterford Township and Oakland County. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a non primary commercial service facility.
Document 12: National Register of Historic Places listings in Hinds County, Mississippi: This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Hinds County, Mississippi, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map.
Document 13: Nacoochee Mound: The Nacoochee Mound (Smithsonian trinomial 9WH3) is an archaeological site on the banks of the Chattahoochee River in White County, in the northeast part of the U.S. state of Georgia, at the junction of Georgia State Route 17 and Georgia State Route 75. First occupied as early as 100-500 CE, the site was later developed and occupied more intensively by peoples of the South Appalachian Mississippian culture (a regional variation of the Mississippian culture) from 1350 to 1600 CE. One of their characteristic platform mounds is located at the site. A professional archeological excavation revealed a total of 75 human burials, with artifacts that support dating of the site.
Document 14: Theodore J. Hoover Natural Preserve: Theodore J. Hoover Natural Preserve, which includes Waddell Marsh, is located at the mouth of Waddell Creek, a coastal freshwater marsh that is one of the rarest habitats on the Central Coast of California. This marsh is one of the few relatively undisturbed bodies of fresh water left along the West coast. The land is 23 acres of wetland habitat. It is part of the Rancho del Oso Big Basin Redwoods State Park, located approximately 65 miles south of San Francisco. The elevation in the park ranges from sea level to over 2,000 feet. The area was named after William W. Waddell, who established the last of his four sawmills there in 1868. The sawmill ran down after his death in 1875. All the boilers were left in the area; they are now completely surrounded by second-growth redwoods. Other trees found in the park are conifers, and oaks. Within the park there are different vegetation types to be seen, such as chaparral, redwood forests, and riparian habitats.
Document 15: Coldwater, Mississippi: Coldwater is a small town in Tate County, Mississippi. It is in the Memphis Metropolitan Area. The population was 1,674 at the 2000 census.
ground_truth: Marshall County
sub_queries: Which state is Pocahontas Mounds located? Answer: Mississippi
Waterford, Mississippi >> located in the administrative territorial entity Answer: Marshall County