question: Bryan Konietzko was the co-creator of the Nickelodeon animated series that ran between what years?
answer: 2012 to 2014
context: Title: The Legend of Korra (comics)
  Passage: The Legend of Korra comics are a continuation of the Nickelodeon animated television series of "The Legend of Korra", created by Michael Dante DiMartino and Bryan Konietzko.  It is set right after the series finale, "The Last Stand."
  Title: The Legend of Korra
  Passage: The Legend of Korra is an American animated television series that aired on the Nickelodeon television network from 2012 to 2014.  It was created by Bryan Konietzko and Michael Dante DiMartino as a sequel to "", which aired from 2005 to 2008.  Animated in a style strongly influenced by anime, the series is set in a fictional universe in which some people can manipulate, or "bend", the elements of water, earth, fire, or air.  Only one person, the "Avatar", can bend all four elements, and is responsible for maintaining balance in the world.  The series follows Avatar Korra, the reincarnation of Aang from the previous series, as she faces political and spiritual unrest in a modernizing world.
  Title: Bryan Konietzko
  Passage: Bryan Konietzko (born June 1, 1975) is an American animation director, writer, producer and musician.  He is best known, together with Michael Dante DiMartino, as the co-creator and executive producer of the animated series "" and "The Legend of Korra".
  Title: Avatar: The Last Airbender (comics)
  Passage: The Avatar: The Last Airbender comics are a continuation of the original Nickelodeon animated television series, "", created by Michael Dante DiMartino and Bryan Konietzko.  There is also a continuation of "The Legend of Korra" in comic form.
  Title: Sokka
  Passage: Sokka (索卡 , Suǒ Kǎ ) is a fictional character in Nickelodeon's animated television series "" and its sequel series "The Legend of Korra".  The character, created by Michael Dante DiMartino and Bryan Konietzko, is voiced by Jack DeSena in the original series and by Chris Hardwick in the sequel series.  In the live-action film adaptation "The Last Airbender", he is portrayed by Jackson Rathbone.
  Title: The Legend of Korra (season 4)
  Passage: Book Four: Balance is the fourth and final season of the animated television series "The Legend of Korra" by Michael Dante DiMartino and Bryan Konietzko.  It consists of thirteen episodes ("chapters"), all animated by Studio Mir.  The episodes are made available on the Nickelodeon website and other online outlets each Friday beginning on October 3, 2014.  Critical reception of "Book Four", as of the series in general, was positive.
  Title: The Legend of Korra (season 3)
  Passage: The third season of the animated television series "The Legend of Korra", titled Book Three: Change, was created by Michael Dante DiMartino and Bryan Konietzko, and consists of thirteen episodes ("chapters"), all animated by Studio Mir.  The season began airing on Nickelodeon in the U.S. on June 27, 2014.  After leaked episodes and following declining ratings, the series stopped airing on Nickelodeon after episode 8 on July 25, 2014.  Episodes 9 to 13 of "Book Three" were subsequently made available on the Internet weekly through Nickelodeon's website and on digital download platforms.
citations: Bryan Konietzko The Legend of Korra