Question: What two groups co-produced a science fiction television series starring Canadian actress Jennifer Spence? 

Context paragraphs:
Ari Millen: Ari Millen (born January 19, 1982) is a Canadian film, television and stage actor.  He is best known for his performance as numerous clones in the critically acclaimed Space and BBC America science fiction television series "Orphan Black", for which he won a Canadian Screen Award in 2016.  Ari Millen is married to Canadian actress Kassandra Santos, with whom he has a daughter named Lily.

Amanda Tapping: 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".

Sebastian Spence: Sebastian Spence (born December 9, 1969 ) is a Canadian actor.  He played the lead role of Cade Foster in the Space Channel science fiction television series, "First Wave" (1998–2001).

List of Nathan for You episodes: "Nathan for You" is an American docu-reality comedy television series starring Canadian comedian Nathan Fielder.  The series was co-created by Fielder and premiered on February 28, 2013 on the American cable television network Comedy Central.  In the series, Fielder plays an off-kilter version of himself, who tries to use his business background and life experiences to help struggling companies and people, offering them sometimes-outlandish strategies.

Stargate SG-1: Stargate SG-1 (often abbreviated as SG-1) is an adventure and military science fiction television series and part of Metro-Goldwyn-Mayer's "Stargate" franchise.  The show, created by Brad Wright and Jonathan Glassner, is based on the 1994 science fiction film "Stargate" by Dean Devlin and Roland Emmerich.  The television series was filmed in and around the city of Vancouver, British Columbia, Canada.  The series premiered on Showtime on July 27, 1997 and moved to the Sci Fi Channel on June 7, 2002; the final episode first aired on Sky1 on March 13, 2007.  With 214 episodes over ten seasons, "Stargate SG-1" had surpassed "The X-Files" as the longest-running North American science fiction television series, until it was surpassed by the series "Smallville" in 2011.

Amanda Brugel: Amanda Brugel is a Canadian actress.  She is perhaps best known for her role as Michelle Krasnoff in the short-lived Canadian comedy series "Seed" (2013–2014).  In 2013, Brugel co-starred as Vanessa in the Canadian comedy film "Sex After Kids", for which she won an ACTRA Award for Best Female Performance.  She later appeared in the David Cronenberg satirical drama film "Maps to the Stars" (2014), and the BBC-Space science fiction television series "Orphan Black" (2015).

Jennifer Spence: Jennifer Spence (born January 22, 1977) is a Canadian actress.  Her acting credits include playing the part of Dr. Lisa Park on the "Stargate Universe" television series.  Other television series in which she has had principal roles are "Exes and Ohs", "The 4400", "Reunion", "Write & Wrong", and recurring roles on "Killer Instinct", "DaVinci's Inquest", "You Me Her", and "Travelers".

Why Not? with Shania Twain: Why Not?  with Shania Twain is an American reality television series starring Canadian country music singer/songwriter Shania Twain.  It premiered on the Oprah Winfrey Network on May 8, 2011.  The series sheds light on the life of Twain, who by the age of 22, had survived a childhood of poverty and the loss of both her parents in an accident.  At the height of super-stardom, Twain's marriage ended.  In the series, Twain opens up about her personal tragedies and how she dealt with them.  Also interviewed are her sister, friends, bandmates, and others in the music industry.  She marries her fiancé during the concluding episode.

Voyage to the Bottom of the Sea (TV series): Voyage to the Bottom of the Sea is a 1960s American science fiction television series based on the 1961 film of the same name.  Both were created by Irwin Allen, which enabled the movie's sets, costumes, props, special effects models, and sometimes footage, to be used in the production of the television series.  "Voyage to the Bottom of the Sea" was the first of Irwin Allen's four science fiction television series, as well as the longest-running.  The show's main theme was underwater adventure.

Travelers (TV series): Travelers is a science fiction television series created by Brad Wright, starring Emmy Award-winning actor Eric McCormack.  The series is a co-production between Netflix and Showcase.  The first season comprises 12 episodes and premiered on Showcase on October 17, 2016; the entire series premiered globally (outside of Canada) on Netflix, on December 23, 2016.  On February 8, 2017, Netflix and Showcase renewed the show for a second season.  Season 2 production began in March 2017, ahead of the Canadian premiere on Showcase scheduled to air on October 16, 2017, which will be followed by a Netflix release.

Supporting paragraphs: Jennifer Spence Travelers (TV series)
Answer: Netflix and Showcase