Question: Val Diamond (born 1951) is a stage performer and San Francisco icon, best known for her role in which of the world's longest-running musical revue, that began its run in 1974?
Context: Mary Begoña (born 1929 in Bilbao, Spain) was the stage name of María Bragas Begoña who was a Spanish vedette and actress.  She started dancing at age 7 and performed in venues in Madrid while she was studying at the Academies of Quiroga, Ompín and Monreal.  Then she studied with Antonio Bautista and Sacha Goudine in Barcelona.  She debuted in a musical revue at the age of fourteen and during Spanish Civil War (from 1936 to 1939) was part of the CNT Union.  In 1943, Begoña worked in Valencia in Juanita Reina's acting troupe, but returned to Madrid to debut in the Teatro Calderón.  In 1945 she appeared in the revue "Danubio Azul" (Blue Danube) with Manolo Caracol and Lola Flores and the following year was the principal vedette in the revue "De la Tierra a Venus" (From the Earth to Venus).  For the next several years she performed in variety shows with various acting troupes, such as "Tres días para quererte" (1945), "¡Róbame esta noche!"  (1947), "A La Habana me voy" (1948).  In 1951, she did a season in the US and then returned to Spain appearing in "¡A vivir del cuento!"  (1952) and "Los líos de Elías" (1954).  Begoña then formed her own company, which between 1953 and 1960 performed ten different plays.  As her career declined in revue style shows, she began performing in comedy theater, film, and television. George Walker and Bert Williams were two of the most renowned figures of the minstrel era.  However the two did not start their careers together.  Walker was born in 1873 in Lawrence, Kansas.  His onstage career began at an early age as he toured in black minstrel shows as a child.  George Walker became a better known stage performer as he toured the country with a traveling group of minstrels.  George Walker was a "dandy", a performer notorious for performing without makeup due to his dark skin.  Most vaudeville actors were white at this time and often wore blackface.  As Walker and his group traveled the country, Bert Williams was touring with his group, named Martin and Selig’s Mastodon Minstrels.  While performing with the Minstrels, African American song-and-dance man George Walker and Bert Williams met in San Francisco in 1893.  George Walker married Ada Overton in 1899.  Ada Overton Walker was known as one of the first professional African American choreographers.  Prior to starring in performances with Walker and Williams, Overton wowed audiences across the country for her 1900 musical performance in the show "Son of Ham."  After falling ill during the tour of Bandana Land in 1909, George Walker returned to Lawrence, Kansas where he died on January 8, 1911.  He was 38. Val Diamond (born 1951) is a stage performer and San Francisco icon.  She is best known for her role in the stage musical, "Beach Blanket Babylon". Randal John Metz (born April 24, 1959) is a professional puppeteer and variety/stage performer.  He is known for creating puppet productions, and puppet performer for Children’s Fairyland’s Open Storybook Puppet Theater in Oakland, California, the oldest continuously operating puppet theater in the United States.  He currently produces seven different puppet shows a year for the theater, and tours his shows throughout California under the name The Puppet Company.  He has served several terms as President and Vice-President of the San Francisco Bay Area Puppeteers Guild. Les Misérables ( ; ] ), colloquially known in English-speaking countries as Les Mis or Les Miz ( ), is a sung-through musical based on the novel "Les Misérables" by French poet and novelist Victor Hugo.  Premiering in Paris in 1980, it has music by Claude-Michel Schönberg and original French-language lyrics by Alain Boublil and Jean-Marc Natel, alongside an English-language libretto with accompanying English-language lyrics by Herbert Kretzmer.  The London production has run continuously since October 1985, making it the longest-running musical in the West End and the second longest-running musical in the world after the original Off-Broadway run of "The Fantasticks". Showtune is a musical revue celebrating the words and music of Broadway composer and lyricist Jerry Herman.  Its title was inspired by Herman's autobiography of the same name.  The revue's original title was "Tune the Grand Up".  After its 1985 San Francisco premiere and several regional productions through the 1990s, the piece played in the West End in 1998 under the title "The Best of Times", and Off-Broadway in 2003, titled "Showtune". Steve Silver's Beach Blanket Babylon is the world's longest-running musical revue.  The show began its run in 1974, at the Savoy Tivoli and has since moved to the larger Club Fugazi in the North Beach district of San Francisco. Michael Brown (14 December 1920 – 11 June 2014) was an American composer, lyricist, writer, director, producer, and performer.  He was born in Mexia, Texas.  His musical career began in New York cabaret, performing first at Le Ruban Bleu.  In the 1960s, he was a producer of industrial musicals for major American corporations such as J.C. Penney and DuPont.  For the DuPont pavilion at the 1964 New York World’s Fair, Brown wrote and produced a musical revue “The Wonderful World of Chemistry,” staged 48 times a day by two simultaneous casts in adjacent theaters.  For years, he maintained a reunion directory of the cast and crew, which included Robert Downey, Sr. as a stage manager.  2005 mailing: “After all, it was a remarkable time in all of our lives.  We can be fairly certain nothing like it will be seen again.  Love all round, Mike.”  Several of his songs have entered the American repertoire, including "Lizzie Borden" and "The John Birch Society," which were popularized by the Chad Mitchell Trio. The Club Fugazi is a small theater and nightclub located in the North Beach, San Francisco, California district of San Francisco, California.  The address is 678 Green Street, although the portion of Green Street in front of the club was renamed Beach Blanket Babylon Boulevard in 1996, in honor of the musical revue that has played at the Club Fugazi since 1974. Christopher Statton is an American artist and arts administrator, community activist, and philanthropist, and activist based in the San Francisco Bay Area.  Statton is best known for his role in establishing San Francisco’s oldest continuously running theater, the Roxie Theater as a non-profit during his four-year tenure as Executive Director, 2010 – 2013.  In 2013 he was awarded the Marlon Riggs Award by the San Francisco Film Critics Circle for “his significant contribution to San Francisco’s film community through the Roxie Theater over the past four years.”  Ryan Coogler also received the award for his film "Fruitvale Station".  In 2013, San Francisco District 9 Supervisor David Campos awarded Statton with a Certificate of Honor for his “important and tireless work with the Roxie.”  Statton resigned from the Roxie in 2013 due to health concerns.
Answer: Beach Blanket Babylon