Question: What was the venue where UFC 191 was held originally called?

Context paragraphs:
Alhambra Theatre (Portland, Oregon): Alhambra Theatre is a theater building in Portland, Oregon, in the United States.  The venue was originally called the Alhambra upon its completion in 1913; subsequent names included Sabala's, the Mt. Tabor Legacy, and Mt. Tabor Theater.  In December 2015, owner Phil Ragaway announced the venue would become the Quarterworld arcade; he hopes to open the new business by March 2016.

2006 Unitech Cup: The Unitech Cup 2006 was 3 match bilateral One-Day cricket contest between home team Sri Lanka and India.  The Unitech Cup was originally a Triangular One-Day Cricket Tournament to be held in Sri Lanka, between Sri Lanka, India and South Africa.  However, South Africa pulled out due to safety issues regarding a nearby bomb blast in Colombo, not far from the stadium.  The tournaments fixtures were to be held originally in the cities of Dambulla and Colombo, but were later revised to be played only in Colombo.

UFC on Fox: Johnson vs. Benavidez 2: UFC on Fox: Johnson vs. Benavidez 2 (also known as UFC on Fox 9) was a mixed martial arts event held on December 14, 2013, at the Sleep Train Arena in Sacramento, California.  It was the UFC's third visit to the venue, after UFC 65 and UFC 73.

1993 FIFA World Youth Championship: The 1993 FIFA World Youth Championship took place in Australia for second time from 5 to 20 March 1993.  The 1993 championship was the 9th contested.  The tournament took place in five venues: Sydney, Canberra, Brisbane, Melbourne and Adelaide.  The tournament was to be held originally in Yugoslavia, but was moved to Australia due to the Yugoslav Wars.

UFC 191: UFC 191: Johnson vs. Dodson 2 was a mixed martial arts event held on September 5, 2015, at the MGM Grand Garden Arena in Las Vegas, Nevada.

Merley: Merley is a large housing estate in the borough of Poole, a mile (2 km) south of Wimborne Minster.  Originally called Myrle, Merley was a manor in the tithing of Great Canford (or Canford Magna).  The village merges with that of Oakley, and the housing estate was originally going to be called "Oakley Garden Village", note Oakley Shops and other signposts around the community but the name was changed.  The housing estate only covers part of the area that was originally called Merley/Myrle.  The Poole ward is Merley and Bearwood.  The population of this ward taken at the 2011 census was 10,392.

Constans Theatre: The Constans Theatre is a performing arts venue located on the University of Florida campus in Gainesville, Florida.  The facility first opened in 1967, and currently serves as a venue for musical concerts, theater, dance, and lectures.  The facility, upon completion, was named for Henry Philip Constans, the founder of the Florida Players (originally called the dramatic club of the University of Florida).  He also headed the Department of Speech from 1931 to 1967 during which time he had the responsibility for the Florida Players both in advisory and directing capacities.  Professor Constans and several other speech department faculty members served as directors of various plays presented by the student organization.  Management of the Florida Players shifted from the Department of Speech to the Theatre Department when this department was created in 1971.

MGM Grand Garden Arena: The MGM Grand Garden Arena (originally known as the MGM Grand Garden Special Events Center) is a multi-purpose arena located within the MGM Grand Las Vegas on the Las Vegas Strip.

UFC Live: Jones vs. Matyushenko: UFC Live: Jones vs. Matyushenko (also known as UFC on Versus 2) was a mixed martial arts event held by the Ultimate Fighting Championship on Sunday, August 1, 2010.  Originally scheduled to take place at the EnergySolutions Arena in Salt Lake City, Utah, the UFC was forced to move the event to a different venue due to low ticket sales.  On June 14, 2010, the event was moved to San Diego, California to be held at the Valley View Casino Center.  The event was the second UFC event to be broadcast on Versus; the first being .

Indonesian Grand Prix: The Indonesian Grand Prix was an open-wheel racing car motor race, held intermittently as motorsport ambitions varied in Indonesia.  Held originally at the Ancol Circuit near Jakarta in 1976 as part of the burgeoning Rothmans International Grand Prix Trophy series for Formula Pacific open wheelers, the race disappeared as quickly as it arrived.  While motorcycle racing continued to enjoy support in Indonesia, car racing fluctuated.  The early 1980s saw a burst of enthusiasm import some Australian teams briefly in a demonstration but no race eventuated.  Finally a second Grand Prix was held in 1993 for the Australian Formula Holden category.  It was planned as a demonstration for attracting the Formula 1 world championship and a mixed grid of local and Australian driver raced at Sentul International Circuit.  The experienced Australians dominated with Mark Larkham claiming victory in a Reynard 91D.  Sentul was too small for Formula One and the money to build a circuit never appeared and the race disappeared again.

Supporting paragraphs: UFC 191 MGM Grand Garden Arena
Answer: MGM Grand Garden Special Events Center