Question: Cusi Cram wrote for the British television series produced by what company?
Context: Zen is a British television series produced by Left Bank Pictures for the BBC, co-produced with WGBH Boston for its "Masterpiece" anthology series, Mediaset and ZDF.  It stars Rufus Sewell and Caterina Murino and is based on the Aurelio Zen detective novels by Michael Dibdin.  The series was filmed on location in Italy, but the dialogue is in English.  The series, which comprises three 90-minute films, was broadcast in the United Kingdom on Sunday evenings from 2 January 2011 on BBC One.  The three films were based on the books "Vendetta", "Cabal" and "Ratking".  The series was cancelled by BBC One in February 2011; BBC One controller Danny Cohen later said there were already enough male crime-fighters on TV.  Left Bank, the show's producer, tried to find other broadcasters to fund another series but were unsuccessful. Space: 1999 is a British science-fiction television series that ran for two seasons and originally aired from 1975 to 1977.  In the opening episode, set in the year 1999, nuclear waste stored on the Moon's far side explodes, knocking the Moon out of orbit and sending it, as well as the 311 inhabitants of Moonbase Alpha, hurtling uncontrollably into space.  The series was the last production by the partnership of and was the most expensive series produced for British television up to that time.  The first series was co-produced by ITC Entertainment and Italian broadcaster RAI, while the second series was produced solely by ITC. Mine All Mine is a British television series produced by Red Production Company for ITV.  It was written by Russell T Davies and starred Griff Rhys Jones.  The story takes place in Swansea, Wales. Lead Balloon is a British television series produced by Open Mike Productions for BBC Four.  The series was created and is co-written by comedian Jack Dee and Pete Sinclair.  It stars Dee as Rick Spleen, a cynical and misanthropic comedian whose life is plagued by petty annoyances, disappointments and embarrassments.  Raquel Cassidy, Sean Power and Tony Gardner also star.  The first series of six episodes was broadcast on BBC Four in 2006, with the first episode achieving the highest ratings for a comedy on the channel.  Repeats of the series were run on BBC Two and BBC HD, bringing it to a larger audience.  The second series of eight episodes aired on BBC Two from November 2007; the third series aired from November 2008; and the final series aired from 31 May 2011 until 5 July. Survivors is a British science fiction television series produced by the BBC.  It depicts the lives of a group of people who survived a virulent unknown strain of influenza which has wiped out most of the human species.  According to the producers, the series is not a remake of the 1970s BBC television series "Survivors" (1975–1977), created by Terry Nation, but rather is loosely based on the novel of the same name that Nation wrote following the first series of the 1970s programme.  Two series were produced of the new show: series 1 ran on BBC One and BBC HD in November–December 2008, and series 2 ran in January–February 2010, ending with a cliffhanger.  The BBC announced on 13 April 2010 that, due to poor viewing figures and other considerations, "Survivors" had been cancelled. Chiller is a British horror fantasy anthology television series produced by Yorkshire Television, which aired in the United Kingdom on ITV from 9 March to 27 April 1995.  Consisting of five episodes, each story involves, to some extent, the supernatural, and features lead actors with familiar faces from British television.  The complete series was released on DVD on 1 July 2013. The Beiderbecke Affair is a television series produced in the United Kingdom by ITV during 1985, written by the prolific Alan Plater, whose lengthy credits in British television since the 1960s included the four-part mini series "Get Lost! " for ITV in 1981.  "The Beiderbecke Affair" has a similar style to "Get Lost!" , wherein Neville Keaton (Alun Armstrong) and Judy Threadgold (Bridget Turner) played in an ensemble cast.  Although "The Beiderbecke Affair" was intended as a sequel to "Get Lost!" , Alun Armstrong proved to be unavailable and the premise was reworked.  It is the first part of "The Beiderbecke Trilogy", with the two sequel series being "The Beiderbecke Tapes" (1987) and "The Beiderbecke Connection" (1988). Rides is a British television series produced by the BBC between 1992 and 1993.  It lasted two series of six episodes each and was made by Warner Sisters, a UK-based television production company based in Ealing. The Octonauts is a British children's television series, produced by Silvergate Media for the BBC channel CBeebies.  The series is animated in Ireland by Brown Bag Films but uses British voice actors.  The TV series is based on American-Canadian children's books written by Vicki Wong and Michael C. Murphy of Meomi Design Inc. Cusi Cram (born September 22, 1967) is an American playwright, screenwriter, actress, and model.  After signing with Wilhelmina Models at 13 years old, Cram went on to originate the role of Cassie Callison on the ABC soap opera "One Life to Live".  Following her graduation from Brown University, Cram focused on play-writing and screenwriting, namely for the series "Arthur", "The Octonauts", and "The Big C".  Her plays have been produced at American regional theaters and she had her off-Broadway debut at 59E59 Theaters in 2009 with her play "A Lifetime Burning".  She teaches with Primary Stages and lives with her husband, also an "Arthur" writer, in New York City.
Answer: Silvergate Media