Jason Nicholas Miller (born December 24, 1980) best known as Mayhem Miller is an American mixed martial arts fighter and TV host.
 Miller trains at Mercado Muay Thai in Mission Viejo, California and at Kings MMA in Huntington Beach, California.
 He has fought in the UFC, Strikeforce, WFA, WEC and DREAM.
 In his career, Miller beat Robbie Lawler, Tim Kennedy, Denis Kang and Kazushi Sakuraba, among others.
UFC 189: Mendes vs. McGregor was a mixed martial arts event held on July 11, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada.
Robert Glenn "Robbie" Lawler (born March 20, 1982) is an American professional mixed martial artist and former UFC Welterweight Champion.
 A professional competitor since 2001, Lawler is also a former EliteXC Middleweight Champion, and has formerly competed in Strikeforce, PRIDE, and the IFL.
 He is widely considered one of the most consistently entertaining mixed martial artists currently competing, being the only fighter to have won three consecutive "Fight of the Year" awards from Sherdog and MMA Fighting, for his bouts against Johny Hendricks (at UFC 171, in 2014), Rory MacDonald (at UFC 189, in 2015), and Carlos Condit (at UFC 195, in 2016).
Renato da Cunha Sobral (] ; born September 7, 1975), also known as "Babalu", is a retired Brazilian wrestler and mixed martial artist, and former Strikeforce Light Heavyweight Champion.
 Sobral previously fought in the Ultimate Fighting Championship, where he posted a 6–4 record and has also competed for Bellator, RINGS, Jungle Fight, Cage Rage, Affliction, and ONE FC.
 He is the Head Instructor of Babalu's Iron Gym Cerritos and has a Luta Livre black belt.
 He is also a Brazilian jiu-jitsu black belt under Carlos Gracie Jr.
 In his prime he was considered one of the top fighters in the world and defeated the likes of former Welterweight UFC Champion Robbie Lawler, former Light Heavyweight UFC Champion Shogun Rua, former Heavyweight UFC Champion Maurice Smith, along with former title contenders Chael Sonnen, Elvis Sinosic, and Jeremy Horn.
Dan Rory MacDonald (February 2, 1911 – September 20, 1976) was a Canadian fiddler who lived in Cape Breton.
 He is notable for his composition of many fiddle tunes.
Miletich Fighting Systems (MFS) is a mixed martial arts (MMA) training organization.
 It is recognized as an excellent training camp.
 It has been the training camp for fighters such as Matt Hughes, Tim Sylvia, Jens Pulver, Robbie Lawler, and Jeremy Horn.
 MFS is widely regarded as one of the most successful MMA camps of all time.
Runrig are a Scottish Celtic rock group formed in Skye, in 1973 under the name 'The Run Rig Dance Band'.
 Since its inception, the band's line-up has included songwriters Rory Macdonald and Calum Macdonald.
 The current line-up also includes longtime members Malcolm Jones, Iain Bayne, and more recently, Bruce Guthro, and Brian Hurren.
 To date, the band has released fourteen studio albums, with a number of their songs sung in Scottish Gaelic.
The Band from Rockall is a duo and solo project of Runrig songwriters Calum and Rory Macdonald.
 It is also the title of their debut self-titled bilingual album in English and Gaelic "The Band from Rockall" (long title being "The Band from Rockall: The Solo Project from Calum and Rory Macdonald").
Calum MacDonald (Scottish Gaelic: Calum MacDhomhnaill; born 12 November 1953) is the percussionist of the Scottish Celtic rock band Runrig, as well as their primary songwriter with his older brother, Rory MacDonald.
 Rory tends to write the melody, and Calum the lyrics.
 Since former lead singer Donnie Munro left the band in 1997, Rory has taken lead vocal duties on songs in the band's catalogue written in the Scots Gaelic language, as the band's new lead singer, Bruce Guthro, is not a Gaelic speaker.
The Hit Squad, formerly known as Finney's HIT Squad under Jesse Finney and originally as H.I.T. Squad, is a mixed martial arts gym based out of Granite City, Illinois.
 Founded in 2007 by UFC Hall of Fame inductee Matt Hughes, it was purchased in 2011 by MMA veteran Jesse Finney after he retired from professional competition.
 Hughes departed from Miletich Fighting Systems in order to start the team, alongside then-current EliteXC Middleweight Champion Robbie Lawler, longtime boxing coach Matt Pena, and wrestling/conditioning teacher Marc Fiore.

Question: In what city did Robbie Lawler defeat Rory MacDonald in 2015?
Answer: Las Vegas, Nevada