Question: Waiting for Guffman included the actress and comedian of what dual nationality?

full_context: Document 1: Catherine O'Hara: Catherine Anne O'Hara {'1': ", '2': ", '3': ", '4': "} (born March 4, 1954) is a Canadian-American actress, writer, and comedian. She is known for her comedy work on "Second City Television" (1976–84) and in films such as "After Hours" (1985), "Beetlejuice" (1988), "Home Alone" (1990), "" (1992), and "The Nightmare Before Christmas" (1993). Her other film appearances include the mockumentary films written and directed by Christopher Guest: "Waiting for Guffman" (1996), "Best in Show" (2000), "A Mighty Wind" (2003), and "For Your Consideration" (2006).
Document 2: Katharine Isabelle: Katharine Isabelle Murray (born November 2, 1981) is a Canadian actress best known as a scream queen for her roles in various horror films. Born in Vancouver, British Columbia, she made her screen debut as a child in "Cousins" (1989), followed by supporting roles in numerous films and television series. Initially credited as Katie Murray, she later began using the name Katherine Isobel and subsequently Katharine Isabelle. She has starred in the werewolf horror films, "Ginger Snaps" (2000), its sequel, "" (2004), and "" (2004). Her portrayal of the death-obsessed teen, Ginger Fitzgerald, became one of her most notable roles. Additional roles in horror films include "Disturbing Behavior" (1998), "Carrie" (2002), "Freddy vs. Jason" (2003), "" (2010), and "American Mary" (2012). For her performance in the horror film, "American Mary" (2012), she earned several nominations for best actress, including Fangoria Chainsaw Awards, Screamfest Horror Film Festival and Toronto After Dark Film Festival.
Document 3: Rick Moranis: Frederick Allan "Rick" Moranis (born April 18, 1953) is a Canadian-American actor, comedian, screenwriter, producer, musician, and songwriter. He is currently on film acting hiatus. He came to prominence in the sketch comedy series "Second City Television" ("SCTV") in the 1980s and later appeared in several Hollywood films, including "Strange Brew" (1983), "Ghostbusters" (1984), "Spaceballs" (1987), "Little Shop of Horrors" (1986), "Honey, I Shrunk the Kids" (1989, and its 1992 and 1997 sequels), "Parenthood" (1989), "My Blue Heaven" (1990), and "The Flintstones" (1994).
Document 4: Waiting for Guffman: Waiting for Guffman is a 1997 American mockumentary comedy film co-written and directed by Christopher Guest. The film's cast includes Catherine O'Hara, Eugene Levy, Fred Willard, and Parker Posey.
Document 5: Andrea Martin: Andrea Louise Martin (born January 15, 1947) is an American actress, singer, author and comedian, best known for her work in the television series "SCTV". She has appeared in films such as "Black Christmas" (1974), "Wag the Dog" (1997), "Hedwig and the Angry Inch" (2001), "My Big Fat Greek Wedding" (2002) and "My Big Fat Greek Wedding 2" (2016), and lent her voice to the animated films "Anastasia" (1997), "The Rugrats Movie" (1998) and "" (2001).
Document 6: Waiting... (film): Waiting... is a 2005 American workplace comedy film starring Ryan Reynolds, Anna Faris, and Justin Long. It was written and directed by Rob McKittrick. McKittrick wrote the screenplay while working as a waiter. The film is the first effort by McKittrick as a writer-director.
Document 7: Harold Ramis: Harold Allen Ramis (November 21, 1944 – February 24, 2014) was an American actor, director, writer, and comedian. His best-known film acting roles were as Egon Spengler in "Ghostbusters" (1984) and "Ghostbusters II" (1989) and Russell Ziskey in "Stripes" (1981); he also co-wrote those films. As a director, his films include the comedies "Caddyshack" (1980), "National Lampoon's Vacation" (1983), "Groundhog Day" (1993), and "Analyze This" (1999). Ramis was the original head writer of the television series "SCTV", on which he also performed, as well as a co-writer of "Groundhog Day" and "National Lampoon's Animal House" (1978). His final film that he wrote, produced, directed and acted in was "Year One" (2009).
Document 8: Catherine Keener: Catherine Ann Keener (born March 23, 1959) is an American actress. She has been twice nominated for the Academy Award for Best Supporting Actress for her roles as Maxine Lund in "Being John Malkovich" (1999) and Harper Lee in "Capote" (2005). Keener also appeared in the films "The 40-Year-Old Virgin" (2005), "Into the Wild" (2007), "Synecdoche, New York" (2008), and "Get Out" (2017), which were well received by critics. Keener is the muse of director Nicole Holofcener, having appeared in every work of hers to date.
Document 9: Parker Posey: Parker Christian Posey (born November 8, 1968) is an American actress and musician. Following her role in Richard Linklater's 1993 cult hit "Dazed and Confused", she became known during the 1990s after a series of roles in independent films such as "Party Girl" (1995) and "The House of Yes" (1997) that gained her the nickname "Queen of the Indies". She later played improvisational roles in Christopher Guest mockumentaries, including "Waiting for Guffman" (1996), "Best in Show" (2000), "A Mighty Wind" (2003), "For Your Consideration" (2006) and "Mascots" (2016). Her other film appearances include "You've Got Mail" (1998), "Scream 3" (2000), "Superman Returns" (2006), and the Woody Allen films "Irrational Man" (2015) and "Café Society" (2016). On television, Posey has guest-starred in series such as "Will & Grace", "Boston Legal", "The Good Wife", "Louie", "Parks and Recreation", and "Search Party".
Document 10: Christopher Guest: Christopher Haden-Guest, 5th Baron Haden-Guest (born February 5, 1948), simply known as Christopher Guest, is an English-American screenwriter, composer, musician, director, actor, and comedian who holds dual British and American citizenship. Guest is most widely known in Hollywood for having written, directed and starred in his series of comedy films shot in mock-documentary (mockumentary) style. Many scenes and character backgrounds in Guest's films are written and directed, although actors have no rehearsal time and the ensemble improvise scenes while filming them. The series of films began with "This Is Spinal Tap" (directed by Rob Reiner), and continued with "Waiting for Guffman", "Best In Show", "A Mighty Wind", "For Your Consideration", and "Mascots".
Document 11: Fred Willard: Frederick Charles "Fred" Willard (born September 18, 1939) is an American actor, comedian, voice actor and writer, best known for his improvisational comedy. He is known for his roles in the Rob Reiner mockumentary film "This Is Spinal Tap", the Christopher Guest mockumentary films "Waiting for Guffman", "Best in Show", "A Mighty Wind", "For Your Consideration", and "Mascots", and the "" films. He is an alumnus of The Second City. He received three Emmy nominations for his recurring role on the TV series "Everybody Loves Raymond" as Robert Barone's father-in-law, Hank MacDougall. In 2010 he received an Emmy nomination for Outstanding Guest Actor in a Comedy Series for his role on the ABC TV series "Modern Family" as Phil Dunphy's father, Frank Dunphy.
Document 12: This Is Spinal Tap: This Is Spinal Tap (stylized as This Is Spın̈al Tap) is a 1984 American rock music mockumentary comedy film directed, co-written, scored by, and starring Rob Reiner, and co-starring Christopher Guest, Michael McKean and Harry Shearer. The film portrays the fictional British heavy metal band Spinal Tap. The film satirizes the wild personal behavior and musical pretensions of hard rock and heavy metal bands, as well as the hagiographic tendencies of rock documentaries of the time. The three main members of Spinal Tap—David St. Hubbins, Derek Smalls and Nigel Tufnel—are played by actors McKean, Shearer, and Guest, respectively. The three actors play their musical instruments and speak with mock English accents throughout the movie. Reiner appears as Marty Di Bergi, the maker of the documentary. Other actors in the movie are Tony Hendra as group manager Ian Faith, and June Chadwick as St. Hubbins' interfering girlfriend Jeanine. Actors Paul Shaffer, Fred Willard, Fran Drescher, Bruno Kirby, Howard Hesseman, Ed Begley, Jr., Patrick Macnee, Anjelica Huston, Vicki Blue, Dana Carvey, Billy Crystal and Linnea Quigley all play supporting roles or make cameo appearances in the movie.
Document 13: The Absent-Minded Waiter: The Absent-Minded Waiter is a 1977 short film starring Steve Martin, Teri Garr, and Buck Henry. It was written by Martin and directed by Carl Gottlieb. The film was produced by William E. McEuen, who would go on to produce Steve Martin's next six films.
Document 14: John Candy: John Franklin Candy (October 31, 1950 – March 4, 1994) was a Canadian actor and comedian known mainly for his work in Hollywood films. Candy rose to fame as a member of the Toronto branch of the Second City and its related "Second City Television" series, and through his appearances in such comedy films as "Stripes", "Splash", "Cool Runnings", "Summer Rental", "The Great Outdoors", "Spaceballs", and "Uncle Buck", as well as more dramatic roles in "Only the Lonely" and "JFK". One of his most renowned onscreen performances was as Del Griffith, the loquacious, on-the-move shower-curtain ring salesman in the John Hughes comedy "Planes, Trains and Automobiles".
Document 15: Pittsburgh (2006 film): Pittsburgh is a 2006 mockumentary comedy film that follows American actor Jeff Goldblum as he attempts to secure a green card for his Canadian actor/singer/dancer girlfriend Catherine Wreford by appearing with her as the leads in a summer regional theatre production of "The Music Man" in Goldblum's hometown of Pittsburgh, Pennsylvania. The film features numerous other famous personalities portraying themselves, including Ed Begley, Jr. (who had worked with Goldblum on Transylvania 6-5000), Illeana Douglas (who directed Goldblum in her own film "Supermarket"), Moby (as Douglas's boyfriend), Conan O'Brien and Craig Kilborn (hosting Goldblum on their respective shows), Alanis Morissette, and Tom Cavanagh.
ground_truth: Canadian-American