Question:  Penelope Spheeris and Art Hindle are both directors, but only one of them is an actor. Which one? 

full_context: Document 1: Sofia Coppola: Sofia Carmina Coppola ( ; born May 14, 1971) is an American screenwriter, director, producer and former actress.
Document 2: Ciarán Hinds: His television roles include Gaius Julius Caesar in the series "Rome", DCI James Langton in "Above Suspicion", Bud Hammond in "Political Animals" and Mance Rayder in the Emmy Award-winning "Game of Thrones". As a stage actor, Hinds has enjoyed spells with the Royal Shakespeare Company, the Royal National Theatre in London and six seasons with Glasgow Citizens' Theatre, and he has continued to work on stage throughout his career.
Document 3: David Hill (arts director): David Hill is a theatre and arts director and producer, founder of the leading UK cultural events and arts agency ArtReach which initiates, develops and produces extraordinary creative arts projects and programmes. Hill has created and produced the innovative Night of Festivals project, produced the world’s largest interactive video artwork (Under Scan by Rafael Lozano-Hemmer) in Trafalgar Square, London and in public spaces across the UK East Midlands and created/delivered a range of high-profile new arts events such Three Cities Create and Connect, The Lyric Lounge and Dance in the Park. He has also delivered projects in Barcelona, India and the West Indies.
Document 4: Wayne's World (film): Wayne's World is a 1992 American comedy film directed by Penelope Spheeris, produced by Lorne Michaels and written by Mike Myers and Bonnie and Terry Turner. The film stars Myers (in his feature film debut) as Wayne Campbell and Dana Carvey as Garth Algar, rock and roll fans who broadcast a public-access television show. It also features Rob Lowe, Tia Carrere, Lara Flynn Boyle, Brian Doyle-Murray, Chris Farley, Ed O'Neill, Ione Skye, Meat Loaf, and Alice Cooper.
Document 5: The Decline of Western Civilization III: The Decline of Western Civilization III is a 1998 documentary film directed by Penelope Spheeris that chronicles the gutter punk lifestyle of homeless teenagers. It is the third film of a trilogy by Spheeris depicting life in Los Angeles at various points in time. The first film "The Decline of Western Civilization" dealt with the punk rock scene during 1980-1981. The second film "" covers the Los Angeles heavy metal movement of 1986-1988.
Document 6: Face-Off (1971 film): Face-Off is a 1971 Canadian feature film produced by John F. Bassett starring Art Hindle, Trudy Young and John Vernon. The story line concerns a rookie Toronto Maple Leafs ice hockey player and his romance with a musician. Several National Hockey League players also appeared in the film.
Document 7: Hollywood Vice Squad: Hollywood Vice Squad is a 1986 film directed by Penelope Spheeris with music by Keith Levene of Public Image Ltd. The movie has an early screen appearance by Robin Wright as the drug addicted runaway daughter of Trish Van Devere.
Document 8: Doris Wishman: Doris Wishman (June 1, 1912 – August 10, 2002) was an American film director, screenwriter and producer. She is credited with having directed and produced at least thirty feature films during a career spanning over four decades, most notably in the sexploitation film genre.
Document 9: High Art: High Art is a 1998 Canadian-American independent film directed by Lisa Cholodenko and starring Ally Sheedy and Radha Mitchell.
Document 10: Art Ellison: Arthur Wayland "Art" Ellison (1899–1994) was an actor and director who worked for the Kansas City Power and Light Company for forty-eight years before becoming a professional actor. Prior to that, he had appeared in scores of amateur stage productions in the Kansas City area. He was born in Potsdam, New York and he died in Kansas City, Missouri. Director Herk Harvey speculated that Art Ellison had acted in more industrial and educational films than any other, including some directed by a young Robert Altman. He is best known for his part in the 1962 cult-classic horror film "Carnival of Souls".
Document 11: Art Hindle: Arthur Hindle (born July 21, 1948) is a Canadian actor and director.
Document 12: Penelope Spheeris: Penelope Spheeris (born December 2, 1945 or 1946; sources differ) is an American film director, producer and screenwriter. She is best known as a documentary film director whose works include the trilogy titled "The Decline of Western Civilization". She has directed feature films, including "Wayne's World", her highest-grossing film.
Document 13: Arthur Digby: Arthur Digby is a fictional character from the BBC medical drama "Holby City", played by actor Rob Ostlere. He first appeared in the series fifteen episode "Blood Ties", broadcast on 2 January 2013. Arthur arrives at Holby City hospital to start his first year of the Foundation Programme. To prepare for the role Ostlere visited a hospital and shadowed a registrar and foundation doctors on their rounds. He has been described by "Holby City's" publicity department as "naïve and socially awkward" plus holding an "encyclopaedic knowledge" on unusual subjects. Ostlere's first days on-set influenced various aspects of Arthur's characterisation such as his "preppy attire", fidgeting with his glasses and his clumsy nature. Arthur is a talented doctor and his skills are awarded the medical prize titled, Junior Doctor of the Year. Arthur's storylines have focused on his career on the hospital's Keller and AAU wards, alongside the various characters that staff them. In his first year on-screen he works closely with mentor Antoine Malick (Jimmy Akingbola) and staff nurse Chantelle Lane (Lauren Drummond). The latter he develops romantic feelings for which are not reciprocated. Their friendship dominates his initial story and together they become victims of a vicious mugging and a car crash which is caused by Arthur.
Document 14: Annie Hindle: Annie Hindle was the first popular male impersonator performer in the United States. Born in the 1840s in England, she and her adoptive mother, Ann Hindle, migrated to New York City in 1868. Hall performed as a male impersonator in solo acts and in minstrel shows from 1868 to 1886.
Document 15: Chris Spheeris: Chris Spheeris (in Greek: Χρήστος Σφυρής) is a Greek-American composer of instrumental music. He is a producer, vocalist and multi-instrumentalist. Chris is the cousin of Penelope Spheeris and her brother Jimmie Spheeris. Born in Milwaukee, Wisconsin, Chris began writing songs on his guitar as a teenager. In 1985, Chris began composing for film. His work in collaboration with filmmaker Chip Duncan includes the television series Is Anyone Listening, the series Mystic Lands (Discovery Networks), In A Just World (PBS) and the classroom production entitled The Life & Death of Glaciers (Discovery Education).
ground_truth: Arthur Hindle