Question: What brand of caffeinated root beer took over popularity and ended Ramblin' Root Beer's popularity?

full_context: Document 1: 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 2: Classic Cola (Sainsbury's): Classic Cola is a cola made for Sainsbury's Supermarkets in the United Kingdom. It was launched in the mid-1990s and, unlike other store brand colas, which are seen as cheap versions of the real thing, this was designed to be a worthy competitor to main rivals Coca-Cola and Pepsi and the other new contender in the cola business at that time, Virgin Cola, during a period of time which the UK media dubbed "the cola wars". Sainsbury's continues to sell Classic Cola, but it no longer has the same brand recognition as the two major brands. Virgin Cola disappeared from the UK market in 2012.
Document 3: Grandpa Graf's: Grandpa Graf's (also known as Graf's Root Beer,Graf's, or Gran'pa Graf's) is a carbonated soft drink that can presently be purchased in eastern and northern Wisconsin groceries. The beverage is a root beer flavored drink that originated in 1873 from John Graf.
Document 4: Coca-Cola BlāK: Coca-Cola BlāK was a coffee-flavored soft drink introduced by Coca-Cola in 2006 and discontinued in 2008. The mid-calorie drink was introduced first in France, before making its way to the United States and other markets.
Document 5: Virgil's Root Beer: Virgil's Root Beer is a microbrewed gourmet root beer, developed by Edward Crowley and Jill Fraser Crowley, who was the company's president (and founded and serves as CEO of fashion brand Jill Milan). Virgil's Root Beer won the "Outstanding Beverage" Award at the International Fancy Food and Confection Show in 1994, 1996 and 1997. The quality of and demand for Virgil’s Root Beer prompted Whole Foods' request for a cola by the brand: “Whole Foods said, 'Give me a cola with Virgil’s, and you’re in.'”
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: 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 8: Ramblin' Root Beer: Ramblin' Root Beer is a root beer formerly made by The Coca-Cola Company. The product disappeared after Coca-Cola bought Barq's in 1995. A famous ad campaign for the product featured Sarah Jessica Parker. By the 1980s, it was available primarily only in fountain outlets.
Document 9: Root beer: Root beer is a sweet North American soft drink traditionally made using the sassafras tree "Sassafras albidum" (sassafras) or the vine "Smilax ornata" (sarsaparilla) as the primary flavor. Root beer may be alcoholic or non-alcoholic, come naturally free of caffeine or have caffeine added, and carbonated or non-carbonated. It usually has a thick, foamy head when poured. Modern, commercially produced root beer is generally sweet, foamy, carbonated, nonalcoholic, and flavoured using artificial sassafras flavouring. Sassafras root is still used to flavor traditional root beer, but since sassafras was banned by the U.S. Food and Drug Administration due to the controversially claimed carcinogenicity of its constituent safrole, most commercial recipes do not contain sassafras. Some commercial root beers do use a safrole-free sassafras extract.
Document 10: Mug Root Beer: MUG Root Beer, A PepsiCo Subsidiary/Root Beer Corporation is a brand name of root beer made by the New Century Beverage Company of San Francisco, California, a subsidiary of PepsiCo.
Document 11: Latrobe Brewing Company: Latrobe Brewing Company in Latrobe, Pennsylvania, founded in 1839, was one of the largest breweries in the United States and the maker of "Rolling Rock" beer (famous for its small green bottles). It was purchased by Labatt Brewing Company in 1987, which in turn was purchased in 1995 by the Belgian brewing conglomerate corporation Interbrew, which merged later into InBev in 2004.
Document 12: 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 13: A&amp;W Root Beer: A&W Root Beer is a root beer brand primarily available in the United States and Canada, started in 1919 by Roy W. Allen. In 1922, Allen partnered with Frank Wright. They combined their initials to create the brand "A&W" and inspired a restaurant chain, founded in 1922. Originally, A&W root beer drinks sold for five cents.
Document 14: Frostie Root Beer: Frostie Root Beer is a brand of root beer sold in the United States of America. Frostie was originally produced in 1939 by The Frostie Beverage Company of Catonsville, Maryland, owned by George Rackensperger. At the end of 1979, the Frostie brand was sold to the Monarch Beverage Company of Atlanta, Georgia. After years of being under-promoted by Monarch in favor of Dad's Root Beer, the Frostie brand was sold in 2000 to Leading Edge Brands of Temple, Texas. In 2009, Leading Edge Brands sold the Frostie line of beverages to Intrastate Distributors Inc. of Detroit, Michigan.
Document 15: 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.
ground_truth: Barq's