Question: The Mosquito Coast was a novel that was adapted into a 1986 film starring what American actor and producer?
Context: Friend is a 1985 science fiction horror novel by Diana Henstell, about a young man who tries to help a dying friend survive by implanting a microchip into her, only to find that it turns her into a monster.  The novel was adapted into the 1986 film "Deadly Friend", directed by Wes Craven and screenplay by Bruce Joel Rubin. The Mosquito Coast is the most successful novel by American author Paul Theroux.  Published in 1981 it won the James Tait Black Memorial Prize and was the Yorkshire Post Novel of the Year.  It was adapted into a 1986 film starring Harrison Ford, Helen Mirren and River Phoenix. Harrison Ford (born July 13, 1942) is an American actor and film producer.  He gained worldwide fame for his starring roles as Han Solo in the "Star Wars" film series and as the title character of the "Indiana Jones" film series.  Ford is also known for his roles as Rick Deckard in the neo-noir dystopian science fiction film "Blade Runner" (1982); John Book in the thriller "Witness" (1985), for which he was nominated for the Academy Award for Best Actor; and Jack Ryan in the action films "Patriot Games" (1992) and "Clear and Present Danger" (1994). Martha Campbell Plimpton (born November 16, 1970) is an American stage, film, and television actress, singer, and former model.  Her feature film debut was in "The River Rat" (1984) before rising to prominence in the Richard Donner film "The Goonies" (1985).  She has also appeared in "The Mosquito Coast" (1986), "Running on Empty" (1988), "Parenthood" (1989), "Samantha" (1992), "Raising Hope" (2010) and "Small Town Murder Songs" (2011). Adhikar is a 1986 film starring Rajesh Khanna in the lead opposite Tina Munim.  This film was the last film of the pair of Rajesh Khanna and Tina Munim.  The film had box office collection of 9.25 crores in 1986. Paul Edward Theroux (born April 10, 1941) is an American travel writer and novelist, whose best-known work is "The Great Railway Bazaar" (1975).  He has published numerous works of fiction, some of which were adapted as feature films.  He was awarded the 1981 James Tait Black Memorial Prize for his novel "The Mosquito Coast," which was adapted for the 1986 movie of the same name. Blusang Itim (  "Black Blouse" ); (English: "Beauty Within") is a 2011 Philippine drama produced by GMA Network starring Kylie Padilla, Frank Magalona and Carl Guevarra.  It is a TV remake of the 1986 film starring Snooky Serna, which was based on the comic of Elena Patron.  Premieres May 16, 2011 replacing "Alakdana" on GMA's Dramarama Sa Hapon blocked (now Afternoon Prime). The Mosquito Coast is a 1986 American drama film directed by Peter Weir and starring Harrison Ford, Helen Mirren, Andre Gregory, and River Phoenix.  It is based on the novel of the same name by Paul Theroux.  The film tells the story of a family that leaves the United States and tries to find a happier and simpler life in the jungles of Central America.  However, their jungle paradise quickly turns into a dystopia as their stubborn father's behavior becomes increasingly erratic and aggressive.  It was shot in the cities of Cartersville and Rome in Georgia, in addition to Baltimore, Maryland, and Belize. The Hitcher is a 2007 American horror-thriller film starring Sean Bean, Sophia Bush and Zachary Knighton.  It is a remake of the 1986 film of the same name starring Rutger Hauer, Jennifer Jason Leigh, and C. Thomas Howell.  "The Hitcher" was directed by Dave Meyers and produced by Michael Bay’s production company Platinum Dunes.  This is the second feature film collaboration between Sean Bean and Michael Bay after the 2005 film "The Island". Conrad Roberts is an American actor who has appeared in several television series and films over the past forty years.  He first began his career in 1968 when he was cast as "Edward Stark" on the series "The Doctors".  Roberts would appear in over one hundred episodes of the series After leaving the series in 1969, Roberts spent the next fifteen years appearing in various film productions.  During the 1980s, he became best known for his appearance in the film "The Mosquito Coast" as well as a smaller role in the cult horror film "The Serpent and the Rainbow".
Answer: Harrison Ford