Question: In which county is Waterford, from the same state as Harrah's Casino Tunica?

full_context: Document 1: Harrah's New Orleans: Harrah's New Orleans Wikimedia © OpenStreetMap Location New Orleans, LA 70130 Address 8 Canal Street Opening date October 30, 1999 Theme French Quarter No. of rooms 450 Total gaming space 115,000 sq ft (10,700 m) Notable restaurants The Besh Steakhouse Casino type Land Owner Caesars Entertainment Renovated in 2005, 2006 Website Harrah's New Orleans
Document 2: 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 3: Hard Rock Hotel & Casino Atlantic City: The Hard Rock Hotel & Casino Atlantic City (formerly Trump Taj Mahal) is a casino and hotel on the Boardwalk, owned by Hard Rock International, in Atlantic City, New Jersey, United States.
Document 4: 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 5: 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.
Document 6: 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 7: The Linq: The Linq (formerly Flamingo Capri, Imperial Palace and The Quad) is a 2,640 - room hotel, casino and shopping promenade on the Las Vegas Strip in Paradise, Nevada. It is owned and operated by Caesars Entertainment Corporation. As of 2012, the casino is 32,890 sq ft (3,056 m) with 830 slot machines, 55 table games, and a race and sports book.
Document 8: Harrah's Casino Tunica: Harrah's Casino Tunica, formerly Grand Casino Tunica, was a casino and resort located in Tunica Resorts, Mississippi. It was owned and operated by Caesars Entertainment. The casino offered a casino and three hotels with a total of 1,356 rooms. There was also an RV park, the Bellissimo Spa & Salon, a convention center, and a 2,500 seat entertainment venue called the Harrah's Event Center.
Document 9: 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 10: Excalibur Hotel and Casino: Circus Circus Enterprises constructed Excalibur which opened on June 19, 1990, as the largest hotel in the world, with over 4,000 rooms, covering over 70 acres. As of 2016 it is the seventh - largest hotel (by total number of rooms) in Las Vegas, and the eleventh - largest hotel worldwide. MGM Resorts International purchased the property in 2005.
Document 11: World Series of Poker: In 2004, Harrah's Entertainment (now Caesars Entertainment) purchased Binion's Horseshoe, retained the rights to the Horseshoe and World Series of Poker brands, sold the hotel and casino to MTR Gaming Group, and announced that the 2005 Series events would be held at the Harrah's - owned Rio Hotel and Casino, located just off the Las Vegas Strip. The final two days of the main event in 2005 were held downtown at what is now the MTR - operated ``Binion's ''in celebration of the centennial of the founding of Las Vegas. The WSOP also added a made - for - television $2 million`` freeroll'' invitational Tournament of Champions (TOC) event first won by Annie Duke as a ``winner - take - all ''event.
Document 12: 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 13: 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 14: Atlantic City, New Jersey: Caesars Entertainment executives have been reconsidering the future of their three remaining Atlantic City properties (Bally's, Caesars and Harrah's), in the wake of a Chapter 11 bankruptcy filing by the company's casino operating unit in January 2015.
Document 15: Harrah's Casino Tunica: Citing steadily declining business rates in the last few years, Caesars announced the closure of Harrah's Casino Tunica, along with its hotels, golf course, and events center in March 2014. The casino permanently closed on June 2, 2014 and was demolished in August 2015. As of February 2017, the three hotel buildings remain standing, but have not operated since the resort's closure in 2014. The golf course and events center have also been abandoned.
ground_truth: Marshall County
sub_queries: In which state is Harrah's Casino Tunica located? Answer: Mississippi
Waterford, Mississippi >> located in the administrative territorial entity Answer: Marshall County