Question: What character did the actress who played Samantha Carter in the "Stargate" television series play in the show "Sanctuary"?
Context: Samantha "Sam" Carter, USAF is a fictional character in the Canadian–American military science fiction "Stargate" franchise.  Played by Amanda Tapping, she appears in all three shows in the franchise: "Stargate SG-1", "Stargate Atlantis", and "Stargate Universe".  She was a main character in all ten seasons of "Stargate SG-1" (1997–2007).  Following a recurring role in "Stargate Atlantis" for three seasons (2004–07), Carter became a main character in Season 4 of "Atlantis" (2007–08), and also appeared in the 2008 direct-to-DVD "SG-1" films "" and "".  Amanda Tapping accepted a starring role in "Sanctuary" and appears in only the first and last episodes in Season 5 of "Atlantis" (2008–09).  Carter also appears in two episodes of Season 1 of "Stargate Universe." The fourth season of "Stargate Atlantis", an American-Canadian television series, began airing on September 28, 2007 on the US-American Sci Fi Channel.  The fourth season concluded after 20 episodes on March 7, 2008 on Sci Fi.  The series was developed by Brad Wright and Robert C. Cooper, who also served as executive producers.  Amanda Tapping (Col. Samantha Carter) joins the cast as a regular for 14 episodes, Jewel Staite (Dr. Jennifer Keller) was a recurring character for eleven episodes, while regular cast member Torri Higginson (Dr. Elizabeth Weir) was a recurring cast member for four episodes.  Other season four regular cast members include Joe Flanigan, David Hewlett, Rachel Luttrell and Jason Momoa. Season eight of "Stargate SG-1", an American-Canadian military science fiction television series, began airing on July 9, 2004 on the Sci Fi channel.  The eighth season concluded on February 22, 2005, after 20 episodes on British Sky One, which overtook the Sci Fi Channel in mid-season.  This was the first season of the show to have 20 episodes instead of 22, as well as the first to air concurrently with "Stargate SG-1" spinoff series "Stargate Atlantis" (the first season thereof).  The series was originally developed by Brad Wright and Jonathan Glassner, while Brad Wright and Robert C. Cooper served as executive producers.  Season eight regular cast members include Richard Dean Anderson, Amanda Tapping, Christopher Judge, and Michael Shanks.  The eighth season begins with the SG-1 team trying to revive Colonel Jack O'Neill (Richard Dean Anderson) after the events of the seventh season.  At the end of the two-episode season opener, Colonel O'Neill is promoted to General and assumes command of Stargate Command (SGC), while Major Samantha Carter (Amanda Tapping) is promoted to Lieutenant Colonel and assumes command of SG-1.  The season arc centers on the growing threat and seemingly final defeat of the Goa'uld and the Replicators, races who were introduced in the first and third season of the show, respectively. The first season of the military science fiction television series "Stargate SG-1" commenced airing on the Showtime channel in the United States on July 27, 1997, concluded on the same channel on March 6, 1998, and contained 22 episodes.  The show itself is a spin off from the 1994 hit movie, "Stargate" written by Dean Devlin and Roland Emmerich.  Stargate SG-1 re-introduced supporting characters from the film universe, such as Jonathan "Jack" O'Neill and Daniel Jackson and included new characters such as Teal'c, George Hammond and Samantha "Sam" Carter.  The first season was about a military-science expedition team discovering how to use the ancient device, named the Stargate, to explore the galaxy.  However, they encountered a powerful enemy in the film named the Goa'uld, which is bent on destroying Earth and all that oppose them. Stargate is a military science fiction and media franchise based on the film written by Dean Devlin and Roland Emmerich.  The franchise is based on the idea of an alien Einstein–Rosen bridge device (the Stargate) that enables nearly instantaneous travel across the cosmos.  The franchise began with the film "Stargate", released on October 28, 1994, by Metro-Goldwyn-Mayer and Carolco, which grossed US$197 million worldwide.  In 1997, Brad Wright and Jonathan Glassner created a television series titled "Stargate SG-1" as a sequel to the film.  This show was joined by "Stargate Atlantis" in 2004, "Stargate Universe" in 2009, and a prequel web series, "Stargate: Origins", in 2017.  Also consistent with the same story are a variety of books, video games and comic books, as well as the direct-to-DVD movies "" and "", which concluded the first television show after 10 seasons. "Stargate Atlantis" is a Canadian-American science fiction television series created by Brad Wright and Robert C. Cooper as a spin off from its sister show, "Stargate SG-1".  The series resumes the story of the "Lost City" and "New Order" episodes of "SG-1", where a military team led by Colonel (now Brigadier General) Jack O'Neill, Dr. Daniel Jackson, Major (now Lt. Colonel) Samantha Carter and the Jaffa Teal'c, use an ancient alien artifact called the Stargate to travel to different planets to explore and find new technology.  The series pilot "Rising" takes place in the year 2004 after the events of "Lost City" and "New Order", when they finally find the lost city of the Ancients. Amanda Tapping (born 28 August 1965) is an English-born Canadian actress and director.  She is best known for portraying Samantha Carter in the Canadian–American military science fiction television series "Stargate SG-1" and "Stargate Atlantis".  She also starred as Helen Magnus in the science fiction-fantasy television series "Sanctuary". The fifth and final season of the military science fiction television series "Stargate Atlantis" commenced airing on the Sci Fi Channel in the United States on July 11, 2008, concluded on the same channel on January 9, 2009, and contained 20 episodes.  The show itself is a spin off of its sister show, "Stargate SG-1".  The season upgrades previous supporting characters cast members such as Richard Woolsey (from "Stargate SG-1") and Jennifer Keller.  Amanda Tapping's character Samantha Carter was downgraded to recurring character in this season.  The fifth and final season is about a military-science expedition team fighting against the Wraith from their base of operation, Atlantis.  The Wraith primary goal is to gather a fleet to invade Atlantis and find their new "feeding ground", Earth. Danniella Westbrook (born 5 November 1973) is an English actress and reality television personality.  She played Samantha Mitchell in the BBC soap opera "EastEnders" in 1990–1993, 1995–1996, 1999–2000, 2009–2010 and 2016.  Away from "EastEnders" she has presented various shows, and was also a contestant on the ITV show "I'm a Celebrity...Get Me Out of Here! " in 2003.  She competed in the 2010 series of "Dancing on Ice" with US Pairs Skater Matthew Gonzalez and finished fourth in the competition.  In 2013, she appeared in "Hollyoaks" as Trudy Ryan.  In 2016, she took part in the seventeenth series of "Celebrity Big Brother" where she reached the final and finished in fifth place.  On 27 February 2016, it was confirmed that Westbrook would return to EastEnders, very briefly with onscreen brother Grant, for the death of their onscreen mother Peggy Mitchell (Barbara Windsor). Rebecca Blumhagen is an American actress and filmmaker from New York.  She has played Samantha in the HBO / Cinemax breakout series "The Girl's Guide to Depravity," where she is also a cowriter for season 2.  Her other roles include portraying Claire in the movie, "Other Plans," appearing in "Lefty Loosey Righty Tighty" (2011), and in "Get Happy" (2015), and Harding in the film, "Extinction: Patient Zero".  She has also worked on stage.  She appeared in "Romeo and Juliet" produced by the Virginia Shakespeare Festival in 2007.  For her work playing Katia in "Memory House" at Merrimack Repertory Theatre, the "Boston Globe" called her "a remarkably expressive" actor.
Answer: Helen Magnus