Question: What form of theater do Sean Pol McGreevy and Mack and Mabel have in common?

full_context: Document 1: On the Twentieth Century: On the Twentieth Century is a musical with book and lyrics by Betty Comden and Adolph Green and music by Cy Coleman. Based partly on the 1930s film and play of the same name, the musical is part operetta, part farce and part screwball comedy. The story involves the behind-the-scenes relationship between Lily, a temperamental actress and Oscar, a bankrupt theatre producer. On a luxury train traveling from Chicago to New York in the 1920s, Oscar tries to cajole the glamorous Hollywood star into playing the lead in his new, but not-yet-written drama, and perhaps to rekindle their romance.
Document 2: Sunny (musical): Sunny is a musical with music by Jerome Kern and a libretto by Oscar Hammerstein II and Otto Harbach. The plot involves Sunny, the star of a circus act, who falls for a rich playboy but comes in conflict with his snooty family. This show was the follow-up to the 1920 hit musical "Sally", both starring Marilyn Miller in the title roles, and it was Kern's first musical together with Hammerstein. "Sunny" also became a hit, with its original Broadway production in 1925 running for 517 performances. The London production starred Binnie Hale.
Document 3: Mack and Mabel: Mack and Mabel is a musical with a book by Michael Stewart and music and lyrics by Jerry Herman. The plot involves the tumultuous romantic relationship between Hollywood director Mack Sennett and Mabel Normand (transformed from an artist's model to a waitress from Flatbush, Brooklyn for the musical), who became one of his biggest stars. In a series of flashbacks, Sennett relates the glory days of Keystone Studios from 1911, when he discovered Normand and cast her in dozens of his early "two-reelers", through his creation of Sennett's Bathing Beauties and the Keystone Cops to Mabel's death from tuberculosis in 1930.
Document 4: Gregory Grene: Gregory Grene is an American musician based in New York City, who grew up in Chicago and County Cavan, Ireland. He is the son of the classicist David Grene. With his band The Prodigals, he writes and plays a style of music that melds Irish traditional and rock influences, and he has also recorded a solo album, FlipSides (2008), with musicians ranging from John Doyle, former guitarist with Solas, to Tony Cedras, a multi-instrumentalist who has played in Paul Simon's band since the Graceland tour. Grene's music has received critical acclaim over the years, was included in the Rough Guide to Irish Music compilation, and was featured in the soundtrack for "Pride and Glory", a movie starring Ed Norton, Colin Farrell, Jon Voight and Noah Emmerich, as well as on television in the ABC show "Mercy" and the FX series "It's Always Sunny in Philadelphia.
Document 5: The Producers (musical): The Producers is a musical adapted by Mel Brooks and Thomas Meehan from Brooks's 1967 film of the same name, with lyrics written by Brooks and music composed by Brooks and arranged by Glen Kelly and Doug Besterman. As in the film, the story concerns two theatrical producers who scheme to get rich by overselling interests in a Broadway flop. Complications arise when the show unexpectedly turns out to be successful. The humor of the show draws on ridiculous accents, caricatures of homosexuals and Nazis, and many show business in-jokes.
Document 6: Hello, Dolly! (musical): Hello, Dolly! is a 1964 musical with lyrics and music by Jerry Herman and a book by Michael Stewart, based on Thornton Wilder's 1938 farce "The Merchant of Yonkers", which Wilder revised and retitled "The Matchmaker" in 1955. The musical follows the story of Dolly Levi (a strong-willed matchmaker), as she travels to Yonkers, New York, to find a match for the miserly "well-known unmarried half-a-millionaire" Horace Vandergelder. In doing so she convinces his niece, his niece's intended, and Horace's two clerks to travel to New York City.
Document 7: Sean Pol McGreevy: Sean Pol McGreevy (born 11 January 1980) is an Irish actor, singer, composer and musical director best known for Musical Theatre and singing/playing piano in the West End of London. Notable roles include, Mark in Jonathan Larson's "Rent" 2000, Frank Capra in "Mack and Mabel" London 2008 and JJ Brown in "The Unsinkable Molly Brown" London 2009.
Document 8: Sean Mahon: Sean Mahon is an Irish stage and screen actor. He is known for playing Nicky Giblin in the Broadway production of "The Seafarer", Richard Hannay in the Broadway production of "The 39 Steps" and Michael Hess (the lost son) in the award winning feature film, "Philomena". In 2014 he was nominated for a best lead actor award for his portrayal of maverick cop Brian McGonigle in the Irish Drama Red Rock. After much success in Ireland, Red Rock now plays on the BBC in the UK and on Amazon Prime in the US.
Document 9: Sally (musical): Sally is a musical comedy with music by Jerome Kern, lyrics by Clifford Grey and book by Guy Bolton (inspired by the 19th century show, "Sally in our Alley"), with additional lyrics by Buddy De Sylva, Anne Caldwell and P. G. Wodehouse. The plot hinges on a mistaken-identity: Sally, a waif, is a dishwasher at the Alley Inn. She poses as a famous foreign ballerina and rises to fame (and finds love) through joining the Ziegfeld Follies. There is a rags to riches story, a ballet as a centrepiece, and a wedding as a finale. "Look for the Silver Lining" continues to be one of Kern's most familiar songs. The song is lampooned by another song, "Look for a Sky of Blue," in Rick Besoyan's satirical 1959 musical "Little Mary Sunshine".
Document 10: Glen Hansard: Glen Hansard (born 21 April 1970) is an Irish songwriter, actor, vocalist and guitarist for Irish group The Frames, and one half of folk rock duo The Swell Season. He is also known for his acting, having appeared in the BAFTA-winning film "The Commitments", as well as starring in the film "Once", which earned him a number of major awards, including an Academy Award for Best Song.
Document 11: DuBarry Was a Lady: Du Barry Was a Lady is a Broadway musical, with music and lyrics by Cole Porter, and the book by Herbert Fields and B.G. DeSylva. The musical starred Bert Lahr, Ethel Merman and Betty Grable, and the song "Friendship" was one of the highlights. The musical was made into a 1943 Technicolor film, "Du Barry Was a Lady", starring Red Skelton, Lucille Ball, and Gene Kelly.
Document 12: Jonathan Groff: Jonathan Drew Groff (born March 26, 1985) is an American actor and singer.
Document 13: Sweet Charity: Sweet Charity is a musical with music by Cy Coleman, lyrics by Dorothy Fields and book by Neil Simon. It was directed and choreographed for Broadway by Bob Fosse starring his wife and muse Gwen Verdon alongside John McMartin. It is based on Federico Fellini's screenplay for "Nights of Cabiria". However, where Fellini's black-and-white Italian film concerns the romantic ups-and-downs of an ever-hopeful dance hall hostess, in the musical the central character is a dancer-for-hire at a Times Square dance hall. The musical premiered on Broadway in 1966, where it was nominated for 9 Tony Awards, and also ran in the West End as well as having revivals and international productions.
Document 14: Sean McGreevy: Sean McGreevy, born in Belfast, Northern Ireland, is a popular Gaelic footballer who has been the Antrim goalkeeper since making his Championship debut in 1993. McGreevy, a sales rep, made his debut against the then defending All-Ireland champions Donegal in front of 30,000 fans at Ballybofey, Co Donegal. He enjoyed an impressive first outing for Antrim, who narrowly lost to Brian McEniff's side by three points.
Document 15: Michael McGrath (actor): Michael McGrath (born September 25, 1957) is a Tony Award-winning American stage actor. He has appeared in many Broadway stage productions, and is especially noted for his roles in the musicals "Spamalot" and "Nice Work If You Can Get It".
ground_truth: musical