Question: What network did Rebecca Sugars best known work air on?

<P0-S0>  She is best known for creating the Cartoon Network series "Steven Universe", which has made her the first woman to independently create a series for the network. <P0-S1>  Sugar was formerly a writer and storyboard artist on the animated television series "Adventure Time"; her work on both series earned her four Primetime Emmy Award nominations. <P0-S2> Rebecca Sugar (born July 9, 1987) is an American animator, director, screenwriter, producer, and songwriter. <SEP> <P1-S0> John Bishop Ballem (1925–2010) was a Canadian murder mystery/thriller novelist. <P1-S1>  While best known for his novels about the oil industry and private law, Ballem was also a naval air force pilot, assistant professor, specialist in the oil industry and private law lawyer. <P1-S2>  He was an acknowledged legal authority on oil and gas and winner of the Petroleum Law Foundation Prize in 1973. <P1-S3>  He was a member of the Crime Writers of Canada, the Probus Club of Calgary and the Air Crew Association of Alberta: Southern Alberta Branch. <P1-S4>  In 2009, the Law Society of Alberta and the Canadian Bar Association of Alberta awarded John the Distinguished Service Award for Legal Scholarship. <P1-S5>  He was also a Calgary Herald world travels reporter and visited many exotic locations such as both poles. <P1-S6>  Ballem's most important and well known work is the internationally recognized authoritative text,"The Oil and Gas Lease in Canada", a standard legal reference that went to four editions, the final being 2008. <SEP> <P2-S0> Markku Tapani Pölönen (born 16 September 1957 in Eno) is a Finnish film director, screenwriter, editor and owner of film production company Suomen Filmiteollisuus. <P2-S1>  Pölönen's best known work is the 2004 film "Dog Nail Clipper" — directed and written by Pölönen — which was honoured with five awards at the 2005 Jussi Awards (Finland's premier film awards) including Best Direction and Best Script and which film critic Jay Weissberg from "Variety" called Pölönen's "most mature work to date". <P2-S2>  Pölönen has been awarded numerous additional Jussi awards, including best picture and best screenplay for "Onnen Maa" (1994); best picture and best director for "Kivenpyörittäjän kylä" (1995); and best picture, best director, and best screenplay for "A Summer by the River" (1999), plus many more Jussi awards for actors in Pölönen's films. <P2-S3>  Pölönen has further been nominated for at least two other Jussis that he did not win. <SEP> <P3-S0> Steven Universe is an American animated television series created by Rebecca Sugar for Cartoon Network. <P3-S1>  It is the coming-of-age story of a young boy named Steven Universe (voiced by Zach Callison), who lives in the fictional town of Beach City with the "Crystal Gems" – Pearl (Deedee Magno), Garnet (Estelle), and Amethyst (Michaela Dietz), three magical humanoid aliens. <P3-S2>  It premiered on November 4, 2013 as Cartoon Network's first animated series to be solely created by a woman. <P3-S3>  Steven, who is half-Gem, goes on adventures with his friends and helps the Gems protect the world from their own kind. <P3-S4>  Books, comics and a video game based on the series have also been released. <P3-S5>  When the series is in a hiatus, there would usually be multiple episodes airing after it concluded. <P3-S6>  The theme of the series is love and family as it is based on the creator's brother, Steven Sugar.