question: Ekaterina Vandaryeva defeated which Polish MMA fighter in a controversial win in 2011?
answer: Joanna Jędrzejczyk
context: Title: Marcin Held
  Passage: Marcin Held (born January 18, 1992) is a Polish mixed martial artist currently competing in the Lightweight division of the Ultimate Fighting Championship.  A professional MMA competitor since 2008, Held has competed frequently in his home country of Poland and is highly touted by the media, often being regarded as "the prodigy of Polish MMA".  He fought in Bellator MMA from 2010 to 2016, challenging for the Bellator Lightweight Championship in 2015.
  Title: Shannon Ritch
  Passage: Shannon Grey Ritch (born September 27, 1970) is an American professional mixed martial artist, boxer, professional wrestler and kickboxer, known for being the former Gladiators Challenge Heavyweight Champion and KOTC Middleweight Champion also current RUF Interim Heavyweight Champion and IFC Middleweight Champion.  A professional competitor since 1998, Ritch has competed for the MFC, Pancrase, K-1, PRIDE, Rebel Fighting Championship, King of the Cage and the WEC.  Ritch has also has been featured in two episodes of Walker, Texas Ranger as a Biker Gang Member and a character named Knight, Choke in 2011 as an extra, CSI Las Vegas as Thug #2, an episode of iCarly as a MMA Fighter, an episode of Numbers in 2010, an episode of Ultimate Soldier Challenge on the History Channel representing a military contracting company and most recently in 2017 the direct to DVD film, directed by Robert Parham, Bullets, Blades and Blood and upcoming in 2018 No Way Out directed by Jeffrey D. Parker.  Shannon claims he has over 200 professional MMA fights 112 wins, 88 losses and 2 draws, some fights going undocumented and dating back as far as 1991.  His documented record of fights goes back to 1998 with a record of 56 wins, 81 loses, and 4 draws.  Shannon also holds a 2-1 record in professional boxing and a 25-2 record in bare knuckle boxing with all of his wins coming by way of knockout, in 2017 he was inducted into the Bare Knuckle Boxing Hall of Fame and also plans to round out his boxing career in 2018 against boxing superstar Bobby Gunn.  Ritch is also an occasional professional wrestler, recently in mid 2017 main eventing a card in Guyana.  Shannon has also found success as a grappler winning multiple NAGA, Grapplers Quest and Abu Dhabi Combat Club competitions, most recently winning a gold medal in the super heavyweight division at the Grand Canyon 2017 BJJ Open in Arizona and a silver medal at the '17 Arizona State BJJ Championships.  Ritch is also an avid golf player, winning 1st place in many state and pro am competitions held within his native Arizona as recent as 2017.
  Title: Skip Hall (MMA)
  Passage: J. "Skip" Hall is a former mixed martial artist and IBM sales manager.  At 57, "Skip" claimed to be the oldest pro-debuting fighter, and in 2008 at the age of 63 he gained a measure of notoriety as an unusually old combat sports athlete.  He was a participant in the Jasper City Slugfest in August 2006 against former UFC Superfight Champion Dan Severn, and retired in 2009 from active MMA fighting after declaring himself "Oldest Active MMA Fighter in history."
  Title: Demetrious Johnson (fighter)
  Passage: Demetrious Khrisna Johnson (born August 13, 1986) is an American mixed martial artist.  He is the first ever and the current Flyweight Champion of the Ultimate Fighting Championship (UFC).  He currently holds the longest active championship reign at ten title defenses.  He is also the #1 ranked pound for pound MMA fighter in the world.  Known for his quick striking and elusive movement, Johnson has also landed the most takedowns in UFC Flyweight history and holds the record for the latest finish in UFC history with a submission win at 4:59 of the fifth round against Kyoji Horiguchi.  He is also the only UFC fighter to record over 10 takedowns in three different fights.
  Title: Championship Fighting Alliance
  Passage: Championship Fighting Alliance (CFA) is a mixed martial arts (MMA) based promotion company located in Miami Lakes, Florida.  It was founded by former MMA fighter and promoter Jorge De La Noval in 2011.  It has currently produced 10 live events.  Fallon Fox, who currently is signed to fight for CFA, is the first openly transgender MMA fighter in history.  On May 24, 2013, CFA will be hosting CFA 11, their 11th event at the Bankunited Center located on the University of Miami campus.  Fighter 411 reported that CFA had held the most events in Florida during the 2012-2013 season.
  Title: KHK MMA
  Passage: The Khalid Bin Hamad Al Khalifa Mixed Martial Arts (KHK MMA) is a martial arts organization based in Bahrain.  It was founded under the patronage of His Highness Khalid bin Hamad Al Khalifa for its current CEO and professional MMA fighter Mohammed "The Hawk" Shahid in February 2015.  Fighters competing under KHK MMA banner include: former UFC lightweight champion Frankie Edgar, UFC lightweight contender Khabib Nurmagomedov, UFC lightweight fighter Islam Makhachev, Bellator fighter James Gallagher, 2-time IMMAF champion Jose "Shorty" Torres, former UFC fighter and current Titan FC contender Alex Soto, and current Desert Force fighter Hamza Kooheji.  KHK MMA activities include: coaching pro fighters, developing amateur MMA, promoting martial arts events, fitness gyms, and a sports gear brand.
  Title: Kamen Georgiev
  Passage: Kamen Georgiev (Bulgarian: Камен Георгиев ) is a Bulgarian MMA fighter who competes in the Light heavyweight division.  World MMA title holder under ISFA rules 2016.  He is a coach of the national combat wrestling team, and an international referee with a FICW license "A" class in combat wrestling.  Also Kamen Georgiev has won World championships and accolades in multiple sports, most notably in MMA ISFA PRO (Light-heavyweight champion 2016-), World Combat Wrestling Championship(Champion under 100kg, 2015, 2016), World Sanda Championship (Heavyweight Champion 2009, 2011) and FIAS World Combat Sambo Cup(Champion under 90kg, 2014).
  Title: Joanna Jędrzejczyk
  Passage: Joanna Jędrzejczyk (] ; born August 18, 1987) is a Polish mixed martial artist and former Muay Thai kickboxer who competes in the women's strawweight division of the Ultimate Fighting Championship.  She is the current UFC Women's Strawweight Champion and the third European (and only Polish) champion in UFC history after Bas Rutten in 1999 and Andrei Arlovski in 2005.  As of May 2017, she is the consensus #1 female strawweight, and #1 pound-for-pound female MMA fighter in the world.  She is also currently the #8 pound-for-pound fighter in the UFC mixed gender rankings, making her the top female on the list.
  Title: Mamed Khalidov
  Passage: Mamed Khalidov (Russian: Маме́д Саи́дович Хали́дов , "Mamed Saidovich Khalidov"; ] ; Polish: "Mamed Chalidow" ] ; born 17 July 1980 in Grozny) is a Polish-Russian mixed martial artist of Chechen heritage, competing in the Middleweight division of Polish MMA promotion KSW.  He also acquired Polish citizenship.  Khalidov is currently undefeated in the promotion.  As of January 1, 2016, Khalidov was ranked the #13 middleweight in the world by Fight Matrix.  He is the current KSW Middleweight Champion
  Title: Ekaterina Vandaryeva
  Passage: Ekaterina Vandaryeva (born January 20, 1991) is a Belarusian kickboxer who defeated future UFC champion Joanna Jędrzejczyk in a controversial judges' decision to become the WKN champion in 2011.
citations: Joanna Jędrzejczyk Ekaterina Vandaryeva