Task: Question Answering
Input (English): Context: Roberta Williams (born February 16, 1953) is an American video game designer, writer, and a co-founder of Sierra On-Line (later known as Sierra Entertainment), who developed her first game while living in Simi Valley, California. She is most famous for her pioneering work in the field of graphic adventure games with titles such as "Mystery House", the "King's Quest" series, and "Phantasmagoria". She is married to Ken Williams and retired from her career in 1999. Roberta Williams is one of the most influential PC game designers of the 1980s and 1990s, and has been credited with creating the graphic adventure genre., King's Quest is a graphic adventure game series created by the American software company Sierra Entertainment. It is widely considered a classic series from the golden era of adventure games. Following the success of its first installments, the series was primarily responsible for building the reputation of Sierra. Roberta Williams, co-founder and former co-owner of Sierra, designed all of the "King's Quest" games until the series' reboot in 2015., Sierra Entertainment (previously Sierra On-Line, commonly referred to as Sierra) is an American publisher founded in 1979 as On-Line Systems by Ken and Roberta Williams. Based in Oakhurst, California and later in Fresno, California, the division is now owned by Activision, a subsidiary of Activision Blizzard., The Dark Crystal is a graphic adventure computer game based on Jim Henson 's fantasy film , The Dark Crystal . The game was designed by Roberta Williams and published under the SierraVenture line in 1983 as Hi - Res Adventure # 6 : The Dark Crystal . It was the first Hi - Res Adventure released under the SierraVenture line , the previous titles being released under earlier names and later re-released under SierraVenture ., The Dark Crystal is a 1982 AmericanBritish fantasy adventure film directed by Jim Henson and Frank Oz and stars the voices of Stephen Garlick, Lisa Maxwell, Billie Whitelaw, and Percy Edwards. The plot revolves around Jen, an elf-like 'Gelfling' on a quest to restore balance to his alien world by returning a lost shard to a powerful but broken gem. Although marketed as a family film, it was notably darker than the creators' previous material. The animatronics used in the film were considered groundbreaking. The primary concept artist was the fantasy illustrator Brian Froud, famous for his distinctive fairy and dwarf designs. Froud also collaborated with Henson and Oz for their next project, the 1986 film "Labyrinth", which was notably more light-hearted than "The Dark Crystal"., A fairy (also "fay", "fae", "fair folk"; from "faery", "faerie", "realm of the "fays"") is a type of mythical being or legendary creature in European folklore, a form of spirit, often described as metaphysical, supernatural, or preternatural., Frank Oz (born Frank Richard Oznowicz; born May 25, 1944) is an English-born American puppeteer, filmmaker and actor. His career began as a puppeteer, where he performed the Muppet characters of Miss Piggy and Fozzie Bear in "The Muppet Show", and Cookie Monster, Bert, and Grover in "Sesame Street". He is also known for being the puppeteer and voice of Yoda in the "Star Wars" films., Subject: the dark crystal , Relation: developer, Options: (A) actor (B) king (C) realm (D) sierra entertainment (E) success
Output (English): sierra entertainment