Question: Where was the American mixed martial arts organization at which Marlon Moraes competes with bantamweight division based? 

Context paragraphs:
Ultimate Fighting Championship: The Ultimate Fighting Championship (UFC) is an American mixed martial arts organization based in Las Vegas, Nevada, that is owned and operated by parent company WME–IMG.  It is the largest MMA promotion in the world and features the top-ranked fighters of the sport.  Based in the United States, the UFC produces events worldwide that showcase eleven weight divisions and abide by the Unified Rules of Mixed Martial Arts.  As of 2017, the UFC has held over 400 events.  Dana White serves as the president of the UFC.  He has held that position since 2001; while under the leadership of Dana White the UFC has grown into a globally popular multibillion-dollar enterprise.

Nick Mamalis: Nick Mamalis is an American mixed martial artist who competes in the bantamweight division.  A professional MMA competitor since 2006, Mamalis has most notably fought in Bellator Fighting Championships where he competed in the .  Currently he is competing in the bantamweight division of the Absolute Championship Berkut

Raphael Assunção: Raphael O. Assunção (born July 19, 1982) is a Brazilian mixed martial artist who competes in the Bantamweight division of the Ultimate Fighting Championship (UFC).  As of January 30, 2017, he is #4 in the official UFC Bantamweight rankings and #6 by sherdog.com.  He holds notable victories over T.J. Dillashaw, Aljamain Sterling, Marlon Moraes, Bryan Caraway, Joe Lauzon and Jorge Masvidal.

Respect Fighting Championship: Respect Fighting Championship (RESPECT.FC) is a mixed martial arts organization in Germany.  It has won the GNP Award for the best German promotion in 2009, 2010 and 2011 Especially noteworthy in this context is that RESPECT.FC has beaten the Ultimate Fighting Championship (the biggest mixed martial arts organization in the world), who was nominated with their first German based event UFC 99.  The events are broadcast by Fightcast.tv, the only HD Fightsport portal in Europe.

Miesha Tate: Miesha Theresa Tate ( ; born August 18, 1986) is an American Mixed Martial Arts Pundit and former mixed martial artist who competed in the Ultimate Fighting Championship (UFC) and is a former UFC Women's Bantamweight Champion.  Primarily known for her grappling ability, Tate became a wrestler while attending Franklin Pierce High School in Tacoma, Washington and won a state championship during her senior year in 2005.  She began her professional mixed martial arts (MMA) career in 2007, and won the bantamweight championship of the Freestyle Cage Fighting promotion in 2009.  Tate gained increased recognition in 2011, when she won the Strikeforce Women's Bantamweight Championship.  She has also won a silver medal in the FILA Grappling Championships.

Shooto: Shooto is a combat sport/mixed martial arts system and mixed martial arts organization that is governed by the "Shooto Association" and the "International Shooto Commission".  Shooto was originally formed in 1985, as an organization and as a particular fighting system derived from shoot wrestling.  Practitioners are referred to as shooters, similarly to practitioners of shoot wrestling.  Shooto rules have evolved such that their events are now true mixed martial arts competitions.

Mike Richman: Michael Richman (born June 23, 1985) is an American mixed martial artist currently competing in Bellator's bantamweight division.  A professional competitor in mixed martial arts since 2008, Richman is also 2-0 as a professional boxer.

Eddie Wineland: Eddie Wineland (born June 26, 1984) is an American mixed martial artist who competes in the Bantamweight division of the Ultimate Fighting Championship.  A professional competitor since 2003, Wineland is a former WEC Bantamweight Champion.  As of December 14, 2016, he is #13 in the official UFC bantamweight rankings.

Marlon Moraes: Marlon Luiz Moraes (born March 18, 1988) is a Brazilian mixed martial artist who competes in the bantamweight division of the Ultimate Fighting Championship.  He most recently competed for the World Series of Fighting, where he was formerly WSOF Bantamweight Champion.  As of February 2017, Moraes is ranked as the #5 bantamweight fighter in the world by Sherdog.

Seth Dikun: Seth Dikun (born August 5, 1980) is an American mixed martial artist, who is perhaps best known for his three fight stint in the Bantamweight division of the World Extreme Cagefighting.  He currently competes in the Bantamweight division of California based promotion King of the Cage.

Supporting paragraphs: Marlon Moraes Ultimate Fighting Championship
Answer: Las Vegas, Nevada