Question: Muriel Ostrich was the face of a carbonated beverage meaning what?

full_context: Document 1: Michael G. Ankerich: Michael G. Ankerich is a biographer whose work focuses on American silent film and early twentieth century actors and actresses. Ankerich's interviews with the last remaining silent film stars were featured in "Broken Silence: Conversations With 23 Silent Film Stars" (1993) and "The Sound of Silence: Conversations with 16 Film and Stage Personalities Who Made the Transition from Silents to Talkies" (1998). His biography of silent film actress Mae Murray, "Mae Murray: The Girl with the Bee-Stung Lips," was named one of the top 10 must-read film books of 2012.
Document 2: Irn-Bru: Irn-Bru ( "iron brew") is a Scottish carbonated soft drink, often described as "Scotland's other national drink" (after whisky). It is produced in Westfield, Cumbernauld, North Lanarkshire, by A.G. Barr of Glasgow, since moving out of their Parkhead factory in the mid-1990s, and at a second manufacturing site in Mansfield, Nottinghamshire, England. In addition to being sold throughout the United Kingdom, Barr's Irn-Bru is available throughout the world and can usually be purchased where there is a significant community of people from Scotland. Innovative and sometimes controversial marketing campaigns have kept it as the number one selling soft drink in Scotland, where it competes directly with global brands such as Coca-Cola and Pepsi.
Document 3: Moxie: Moxie is a brand of carbonated beverage that was among the first mass-produced soft drinks in the United States. It continues to be regionally popular today. It is produced by the Moxie Beverage Company of Bedford, New Hampshire, which (through several levels of wholly owned subsidiaries) is part of the Kirin Holdings Company of Tokyo, Japan. As a result of widespread brand advertising, the brand name has become the word "moxie" in the English language, meaning "courage, daring, or spirit".
Document 4: Surge (drink): Surge (sometimes styled as SURGE) is a citrus flavored soft drink first produced in the 1990s by The Coca-Cola Company to compete with Pepsi's Mountain Dew. Surge was advertised as having a more "hardcore" edge, much like Mountain Dew's advertising at the time, in an attempt to lure customers away from Pepsi. It was originally launched in Norway as Urge, and was so popular that it was later released in America as Surge. Lagging sales caused production to be ended in 2006 for most markets, and by 2014 Norway was the last country where either Urge or Surge were still sold.
Document 5: Grace Moore: Grace Moore (December 5, 1898January 26, 1947) was an American operatic soprano and actress in musical theatre and film. She was nicknamed the "Tennessee Nightingale." Her films helped to popularize opera by bringing it to a larger audience. She was nominated for the Academy Award for Best Actress for her performance in "One Night of Love".
Document 6: Louise Brooks: Mary Louise Brooks (November 14, 1906 – August 8, 1985), who worked professionally as Louise Brooks, was an American film actress and dancer noted as an iconic symbol of the flapper, and for popularizing the bobbed haircut.
Document 7: 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 8: Muriel Ostriche: Muriel Ostriche (24 May 1896, New York City - 3 May 1989, St Petersburg, Florida) was an American silent film actress. She was also the face of Moxie.
Document 9: Mayo Methot: Mayo June Methot (March 3, 1904 – June 9, 1951), also known as Mayo Methot Bogart, was an American film and theater actress. She appeared in over 30 films, as well as on Broadway. She suffered from alcoholism, the effects of which she ultimately succumbed to in 1951.
Document 10: Muriel Beaumont: Muriel Beaumont, Lady du Maurier (14 April 1876 – 27 November 1957) was an English stage actress. She was the wife of the actor Sir Gerald du Maurier and mother of the writers Angela du Maurier and Daphne du Maurier. She retired from the stage in 1910.
Document 11: Sussex Golden Ginger Ale: Sussex Golden Ginger Ale is a "golden" ginger ale originally bottled in the town of Sussex, New Brunswick, Canada. It is produced by Canada Dry Mott's, a subsidiary of the Dr Pepper Snapple Group. The beverage is retailed in Canada's Maritime Provinces and northern areas in the state of Maine.
Document 12: Mützig: Mützig is a beer brand owned by Heineken and its subsidiaries, and was originally brewed in 1810 by of Alsace, France. It is now a 5.5% ABV lager available in 65cl and 33cl bottles. It has a full-bodied taste and distinctive packaging, and is the most successful premium, locally brewed beer in Central Africa. Mützig is considered a flagship African brand.
Document 13: Vernors: Vernors is a ginger flavored soft drink and the oldest surviving ginger ale brand in the United States. It was created in 1866 by James Vernor, a Detroit pharmacist.
Document 14: Canada Dry: Canada Dry is a brand of soft drinks owned since 2008 by the American Dr Pepper Snapple Group. For over a century, Canada Dry has been known for its ginger ale, though the company also manufactures a number of other soft drinks and mixers. Although Canada Dry originated in Canada, it is now produced in many countries around the globe, including the United States, Mexico, Colombia, the Middle East, Europe and Japan.
Document 15: Monster Beverage: Monster Beverage Corporation is an American beverage company that manufactures energy drinks, natural soft drinks, and fruit drinks including Monster Energy, Hansen's Natural Soda, Hansen's Energy, Hansen's Junior Juice, Hubert's Lemonade, Peace Tea, and Blue Sky.
ground_truth: "courage, daring, or spirit"