Question: Which soft drink was originally developed in 1940 in Tennessee, Dr Pepper or Mountain Dew?

full_context: Document 1: Stewart's Fountain Classics: Stewart's Fountain Classics are a brand of premium soft drinks made in the United States. Stewart's are nostalgic "old fashioned" fountain sodas, having originated at the Stewart's Restaurants, a chain of root beer stands started in 1924 by Frank Stewart in Mansfield, Ohio. In 1990, the bottling rights to Stewart's were acquired by the Cable Car Beverage Corporation. Cream Soda and Ginger Beer flavors were introduced in 1992. Other flavors have been added since then. Cable Car Beverage Corporation, in November 1997, was purchased by Triarc. Cadbury Schweppes PLC acquired the Stewart's brands in 2000 along with Snapple and Mistic Brands for $1.45 billion.
Document 2: Mountain Dew: Mountain Dew (sometimes stylized as Mtn Dew) is a carbonated soft drink brand produced and owned by PepsiCo. The original formula was invented in 1940 by Tennessee beverage bottlers Barney and Ally Hartman. A revised formula was created by Bill Bridgforth in 1958. The rights to this formula were obtained by the Tip Corporation of Marion, Virginia. William H. "Bill" Jones of the Tip corporation further refined the formula, launching that version of Mountain Dew in 1961. In August 1964, the Mountain Dew brand and production rights were acquired from Tip by the Pepsi-Cola company, at which point distribution expanded more widely across the United States and Canada.
Document 3: Caffeine-Free Pepsi: Caffeine-Free Pepsi-Cola was introduced, under the brand name Pepsi Free, in 1982 by PepsiCo as the first major-brand caffeine-free cola in years. (The Canada Dry Company had marketed "Sport Cola," which was also caffeine-free, in the 1960s, but that brand of cola was not a success.) A sugar-free variant, then known as Diet Pepsi Free, was also introduced. The Pepsi Free name itself was phased out in 1987, and today these colas are known simply as Caffeine-Free Pepsi and Caffeine-Free Diet Pepsi. The term "Free" had been reintroduced by PepsiCo on their Sierra Mist line in response to Coca-Cola's successful introduction of their Zero line (although the "Free" refers to a lack of sugar rather than caffeine, since Sierra Mist is already caffeine-free), though in 2008 that drink had reverted to its previous name of Diet Sierra Mist.
Document 4: A&amp;W Cream Soda: A&W Cream Soda is a cream soda carbonated soft drink introduced by A&W Root Beer in 1986. A&W Root Beer was first sold at a Veterans Day parade in Lodi, California in 1919 and the company established in 1922 by Frank Wright and Roy Allen. The first product they created was A & W Root Beer. It was not until 1986 that A&W Brands, headquartered in White Plains, N.Y. introduced A&W Cream Soda and A&W Diet Cream Soda through its network of franchised bottlers and distributors. Although cream soda had been created in 1852 by E.M. Sheldon, A&W Brands was one of the first American companies to make it commercially. In 1993, A&W Brands was purchased by Cadbury/Schweppes, and in 1995 Cadbury/Schweppes purchased the Dr. Pepper/Seven-Up Company, which made A&W a part of the Dr. Pepper/Seven Up, Inc. In 2001, DPSU purchased the Snapple Beverage Group (formally TriArc Beverages), and moved the New York-based company operations to its new headquarters in Plano, Texas. This acquisition put A&W within the same company as the top soda brand companies and made A&W Cream Soda the top brand in cream sodas.
Document 5: Dr Pepper: Dr Pepper is a carbonated soft drink marketed as having a unique flavor. The drink was created in the 1880s by Charles Alderton in Waco, Texas and first served around 1885. Dr Pepper was first nationally marketed in the United States in 1904, and is now also sold in Europe, Asia, Canada, Mexico, Australia, and South America, as well as New Zealand and South Africa as an imported good. Variants include a version without high fructose corn syrup, Diet Dr Pepper, as well as a line of additional flavors, first introduced in the 2000s.
Document 6: The Coca-Cola Company: The Coca-Cola Company, which is headquartered in Atlanta, Georgia, but incorporated in Wilmington, Delaware, is an American multinational beverage corporation, and manufacturer, retailer, and marketer of nonalcoholic beverage concentrates and syrups. The company is best known for its flagship product Coca-Cola, invented in 1886 by pharmacist John Stith Pemberton in Columbus, Georgia. The Coca-Cola formula and brand were bought in 1889 by Asa Griggs Candler (December 30, 1851 – March 12, 1929), who incorporated The Coca-Cola Company in 1892. The company has operated a franchised distribution system since 1889, wherein The Coca-Cola Company only produces syrup concentrate, which is then sold to various bottlers throughout the world who hold exclusive territories. The Coca-Cola Company owns its anchor bottler in North America, Coca-Cola Refreshments.
Document 7: Good Old Mountain Dew: "Good Old Mountain Dew" (ROUD 18669), sometimes called simply "Mountain Dew" or "Real Old Mountain Dew", is an Appalachian folk song composed by Bascom Lamar Lunsford and Scotty Wiseman. There are two versions of the lyrics, a 1928 version written by Lunsford and a 1935 adaptation by Wiseman. Both versions of the song are about moonshine. The 1935 version has been widely covered and has entered into the folk tradition becoming a standard.
Document 8: Amp Energy: Amp Energy (or simply Amp) is an energy drink brand produced and owned by PepsiCo. At the time of its introduction in 2001, Amp Energy was initially distributed under the Mountain Dew soft drink brand. Since 2009, it has been produced and labeled under its own stand-alone trademark name. The beverage is packaged in both 16-ounce and 24-ounce cans, and is sold in the United States, Canada, the United Kingdom and Lebanon. As of 2009, Amp Energy was the number four energy drink brand in the U.S. in terms of overall retail sales.
Document 9: Dublin Dr Pepper: Dublin Dr Pepper was the popular name for a style of Dr Pepper soft drink made by the Dublin Dr Pepper Bottling Company in Dublin, Texas. Dublin Dr Pepper followed the original recipe, using cane sugar as the sweetener as opposed to newer high fructose corn syrup (HFCS). The Dublin plant formula's use of sugar made it popular among soda fans. According to the corporate headquarters at Dr Pepper Snapple Group, this resulted in clashes with other bottlers and the parent company of Dr Pepper. On 12 January 2012, it was announced that Dublin Dr. Pepper will no longer be produced, after the Dublin Dr Pepper Bottling Company settled the trademark dispute instigated by Dr Pepper Snapple Group.
Document 10: Hires Root Beer: Hires Root Beer is a soft drink which is marketed by Dr Pepper Snapple Group. Introduced in 1876, it is considered the second longest continuously made soft drink in the United States. Only Vernors Ginger Ale , dating to 1866, is older.
Document 11: Diet Dr Pepper: Diet Dr Pepper is a no-calorie Dr Pepper that was first introduced in 1986. This version replaces the high fructose corn syrup found in the original with aspartame. Diet Cherry Chocolate Dr Pepper (2007–2008) was introduced as a limited edition flavor on November 21, 2007. It was discontinued in April 2008. It became available in Canada in early January 2008. A nondiet version was never created. The taste is similar to Canfield's Diet Cherry Chocolate Fudge Soda, but with the distinctive Dr Pepper flavor. It was featured in the song "Cherry Chocolate Rain" by YouTube celebrity Tay Zonday. Upon ceasing production, it was replaced by Cherry Vanilla Dr Pepper.
Document 12: Barq's: Barq's is an American soft drink. Its brand of root beer is notable for having caffeine.<ref name="http://www.overcaffeinated.org/database/soda-pop/barqs-root-beer.php">Caffeine Database | Caffeine and Ingredients in Barqs Rootbeer, OverCaffeinated.org's Report on the Ingredients in Barq's Rootbeer</ref> Barq's, created by Edward Barq and bottled since the turn of the 20th century, is owned by the Barq family but bottled by the Coca-Cola Company. It was known as Barq's Famous Olde Tyme Root Beer until 2012.
Document 13: Pepsi-Cola Made with Real Sugar: The Pepsi-Cola Made with Real Sugar, formerly called Throwback, is a brand of soft drink sold by PepsiCo in the United States and in sweet stores in South Australia for its flagship Pepsi and Mountain Dew brands. The drinks, called Pepsi Throwback and Mountain Dew Throwback, are named as such because they are flavored with cane sugar and beet sugar instead of high fructose corn syrup, which soft drink companies used to replace sugar (in their North American products) in the 1980s. In addition, these drinks use retro packaging. As of June 2014, Pepsi Throwback has been replaced in some areas of the United States by "Pepsi-Cola Made with Real Sugar", a new product formulation, also made without high fructose corn syrup.
Document 14: Diet Mountain Dew: Diet Mountain Dew is a no-calorie Mountain Dew that was first introduced in 1986. It was formerly known as "Sugar-Free Mountain Dew" until 1986, when it was given its current name. In 2006 Diet Mountain Dew was reformulated with a new "Tuned Up Taste", using a blend of sucralose, aspartame, and acesulfame potassium as sweeteners. The previous formulation was sweetened exclusively with aspartame. In limited areas in the United States, Diet Mountain Dew has treated water instead of carbonated water as a fountain drink.
Document 15: List of citrus soft drinks: In addition to Pepsi's Mountain Dew, Coca-Cola's Mello Yello or Dr Pepper's Sun Drop, there are a variety of smaller or regional brands for citrus soda. In deference to Mountain Dew's leading position in the market segment, some brands also use the word "Mountain" in their names.
ground_truth: Mountain Dew