Question: Erica Cerra portrayed what in the American post-apocalyptic science fiction drama in 2014?

Context articles: Lexa (The 100)
Terminator Salvation
The 100 (TV series)
Oblivion (2013 film)
Silent Running
Erica Cerra
Revolution (TV series)
List of The 100 episodes
Steel Dawn
On the Beach (1959 film)

Lexa is a fictional character from the American post-apocalyptic science fiction television series "The 100", produced by The CW.
 The recurring television character (portrayed by Alycia Debnam-Carey) does not appear in the books on which the series is based.
 The commander of the allied Grounder clans, Lexa is proven to be a reasonable leader and strong warrior.
 She considers love a weakness, a view significantly impacted by the death of her girlfriend, Costia.
 Though she starts to show romantic feelings for Clarke Griffin (leader of the Sky People) and takes Clarke's views into consideration, Lexa puts her people first, even at the expense of losing Clarke's trust.
Terminator Salvation is a 2009 American post-apocalyptic science fiction war film directed by McG, starring Christian Bale and Sam Worthington.
 It is the fourth installment of the "Terminator" film series.
 In a departure from the previous installments, which were set between 1984 and 2004 and used time travel as a key plot element, "Salvation" is a post-apocalyptic film set in the year 2018, fourteen years after the events of "".
 It focuses on the war between Skynet's machine network and humanity; the remnants of the world's military have organized as the Resistance, fighting against Skynet's killing machines.
 Bale portrays John Connor, Resistance fighter and central character to the franchise, while Worthington portrays cyborg Marcus Wright.
 Anton Yelchin plays as a young Kyle Reese, a character first introduced in "The Terminator", and the film depicts the origin of the T-800 (Model 101) Terminator, played by Roland Kickinger, who replaces Arnold Schwarzenegger as the title character, though CGI was used to recreate Schwarzenegger's facial likeness from the original film, with his consent.
The 100 (pronounced "The Hundred"  ) is an American post-apocalyptic science fiction drama television series that premiered on March 19, 2014, on The CW.
 The series, developed by Jason Rothenberg, is loosely based on the 2013 book of the same name, the first in a series by Kass Morgan.
Oblivion is a 2013 American post-apocalyptic science fiction film based on Joseph Kosinski's unpublished Radical Publishing graphic novel of the same name.
 The film was co-produced and directed by Kosinski.
 It stars Tom Cruise, Morgan Freeman, Andrea Riseborough, and Olga Kurylenko.
 The film was released in the U.S. on April 19, 2013.
 According to Kosinski, "Oblivion" pays homage to science fiction films of the 1970s.
Silent Running is a 1972 environmentally-themed American post-apocalyptic science fiction film starring Bruce Dern, featuring Cliff Potts, Ron Rifkin and Jesse Vint.
 It was directed by Douglas Trumbull, who had previously worked as a special effects supervisor on science fiction films, including "" and "The Andromeda Strain".
Erica Cerra (born October 31, 1979) is a Canadian actress, best known for her portrayal of Deputy Jo Lupo on the Syfy series "Eureka", and artificial intelligence A.L.I.E. and her creator Becca on "The 100".
Revolution is an American post-apocalyptic science fiction television series that ran from September 17, 2012 until May 21, 2014; it was cancelled by NBC in May 2014.
 The show takes place in the post-apocalyptic near-future of the year 2027, 15 years after the start of a worldwide, permanent electrical-power blackout in 2012.
 Created by Eric Kripke and produced by J. J. Abrams' Bad Robot Productions for the NBC network, it originally aired on Mondays at 10:00 pm (ET) doing well enough that NBC ordered a second season shortly after the first season finale.
"The 100" (pronounced "The Hundred"  ) is an American post-apocalyptic science fiction drama television series developed by Jason Rothenberg, which premiered on March 19, 2014, on The CW.
 It is loosely based on a 2013 book of the same name, the first in a book series by Kass Morgan.
 The series follows a group of teens as they become the first people from a space habitat to return to Earth after a devastating nuclear apocalypse.
Steel Dawn is a 1987 American post-apocalyptic science fiction action film that mixes the genres of science fiction and western.
 It stars Patrick Swayze and his wife, Lisa Niemi.
On the Beach is a 1959 American post-apocalyptic science fiction drama film from United Artists, produced and directed by Stanley Kramer, that stars Gregory Peck, Ava Gardner, Fred Astaire and Anthony Perkins.
 This black-and-white film is based on Nevil Shute's 1957 novel of the same name depicting the aftermath of a nuclear war.
 Unlike the novel, no blame is placed on whoever started the war; it is hinted in the film that the threat of annihilation may have arisen from an accident or misjudgment.