Question: Richardson Square Mall includes a privately held regional fast-food chain based in what Texas city?

Context articles: Petro's Chili &amp; Chips
Milo's Hamburgers
Whataburger
Midtown Square Mall (St. Cloud, Minnesota)
Hesburger
Richardson Square Mall
Texas City Independent School District
Air Wisconsin
Biscuitville
White Castle (restaurant)

Petro's Chili & Chips is a small fast-food chain based in Knoxville, Tennessee, with several locations in Knoxville and other parts of East Tennessee, and one location in Lexington, Kentucky, Franklin, Indiana and Bargersville, Indiana.
Milo's Hamburgers is a regional fast-food restaurant chain based in Alabama, United States.
 As of 2016, Milo's has 16 restaurants, 15 in the Birmingham metro area, one in Southside, one in Tuscaloosa (which was destroyed in the EF4 tornado on April 27, 2011 and a new Milo's was recently constructed in a new location, thereby replacing the destroyed restaurant).
 Milo's is known for its secret hamburger sauce and sweet tea, both included with a pie in the Mega Meal combo.
 Its slogan is "Everybody goes to... Milo's"
Whataburger is an American privately held regional fast food restaurant chain, based in San Antonio, Texas, that specializes in hamburgers.
 The company, founded by Harmon Dobson and Paul Burton, opened its first restaurant in Corpus Christi, Texas, in 1950.
 The chain is owned and operated by the Dobson family, along with 25 franchisers.
 s of 2017 , there are currently 809 Whataburger stores across the Southeastern and Southwestern United States regions.
Midtown Square Mall, also known as Midtown Square, is a shopping mall located in St. Cloud, Minnesota.
 Built and opened in 1982, Midtown Square Mall is an enclosed building that includes both retail and office space.
 The mall consists of over 50 retail and business spaces, located within two buildings: a two-story shopping center and a four-story office building.
Hesburger (colloquially known in Finland as "Hese" and in Estonia as "Hess") is a fast-food chain based in Turku, Finland.
 Today, it is the largest hamburger restaurant chain in Finland, Estonia, Latvia and Lithuania, with a larger presence in these markets than U.S. rival McDonald's.
Richardson Square Mall was an enclosed shopping center located in Richardson, Texas, United States.
 Richardson Square Mall demolition began in June 2007.
 Now located in its place is an outdoor retail center which goes by the name Richardson Square.
 The retail center includes Super Target with a Starbucks and Pizza Hut Express inside, Sears, Ross Dress for Less, Anna's Linens, and a Lowe's home improvement store.
 The center also includes pad sites such as Panda Express, Chick-fil-A, Whataburger, Sonic Drive-In, and a Bank of America.
Texas City Independent School District is a public school district based in Texas City, Texas.
 It serves most of Texas City and La Marque as well as a portion of Tiki Island.
Air Wisconsin Airlines is a regional airline based at Appleton International Airport in the town of Greenville, Wisconsin, United States, near Appleton.
 Air Wisconsin is the largest privately held regional airline in the United States.
 It currently operates regional jet flights as American Eagle under contract to American Airlines via a code sharing agreement, serving cities in the U.S. and Canada with hubs at Boston Logan International Airport (BOS), Charlotte Douglas International Airport (CLT), Philadelphia International Airport (PHL) and Ronald Reagan Washington National Airport (DCA) .
 Air Wisconsin previously operated United Express service on behalf of United Airlines followed by US Airways Express service on behalf of US Airways prior to becoming an American Eagle regional air carrier.
 The company has announced it will once again partner with United Airlines as a United Express code sharing air carrier with primary hubs to be located at Chicago O'Hare International Airport (ORD) and Washington Dulles International Airport (IAD) beginning in September 2017 and will be "exclusively operating" as United Express by March 2018.
Biscuitville is a privately held regional fast-food restaurant chain consisting of 54 locations in the U.S. states of North Carolina and Virginia.
 The restaurants specialize in breakfast food and Southern cuisine.
 All biscuits served at Biscuitville restaurants are made from scratch "hot every 20 minutes".
 The company, originally named Mountainbrook Fresh Bread & Milk (eventually known as Pizzaville), started as two bread stores in Burlington, North Carolina The founder, Maurice Jennings, began making pizzas, but soon wanted a way to put the business to work in the morning.
 The company began making biscuits, and the company eventually sold more biscuits than pizzas.
 The company decided to open its first biscuit-only operation, which it named "Biscuitville", opened in Danville, VA, in 1975.
 Today, the corporate headquarters is in Greensboro, North Carolina.
White Castle is an American regional hamburger restaurant chain in the Midwestern and Mid-Atlantic United States, generally credited as the country's first fast-food chain.
 It is known for its small, square hamburgers.
 Sometimes referred to as "sliders", the burgers were priced at five cents until the 1940s and remained at ten cents for years thereafter.
 For several years, when the original burgers sold for five cents, White Castle periodically ran promotional ads in local newspapers which contained coupons offering five burgers for ten cents, takeout only.