Question: Who owns the venue where Cirque du Soleil started performing their "O" production in 1998?

Context paragraphs:
O (Cirque du Soleil): O is a water-themed stage production by Cirque du Soleil, a Canadian circus and entertainment company.  The show has been in permanent residence at the Bellagio in Las Vegas, Nevada, United States, since October 1998.  "O", whose name is pronounced the same way as "eau", the French word for "water", takes place in, around and above a 1.5 e6USgal pool of water, featuring water acts such as synchronized swimming as well as aerial and ground acts.  The "O" theatre, which is designed to resemble a 14th-century European opera house, has 1,800 seats, thus allowing the performance to be watched by 3,600 people a night since the performance usually plays twice in a given day, also designed to meet the special demands of the show.

Mystère (Cirque du Soleil): Mystère is a Cirque du Soleil show in permanent residence at the Treasure Island Hotel and Casino in Las Vegas, Nevada, United States.  It is one of six resident Cirque du Soleil shows in Las Vegas, the others being "O", "Zumanity", "Kà", "Love", and "".  "Mystère" was first performed on December 25, 1993 and quickly won over audiences with its unique style of circus entertainment.  As with many Cirque du Soleil productions, "Mystère" features a mixture of circus skills, dance, elaborate sets, opera, worldbeat music, and street theatre-style comedy.

Denise Stefanie: Born as Denise Stefanie Gonzalez in June 19, 1988, Known professionally as Denise Stefanie, is a Mexican-American singer-songwriter, model and actress.  She began performing for live audiences at the age of 5.  At the age of 11, Denise portrayed Selena Quintanilla-Perez in the musical production of Selena Forever (North American Tour).  Denise began singing Jazz after the advice of her mentor, Herb Jeffries, Denise released her debut Jazz album, Denise, at the age of 12.  At the age of 13, Denise was hired as the lead singer and character for Cirque du Soleil's production of Quidam.  (North American Tour and Japan Tour).  She has since then performed with several Cirque du Soleil productions including Corteo (North American Tour) and Alegria (European Tour).  She was the voice and face of the national campaign, Sevenisima, for 7UP in 2009 and 2010.  Denise is one of the most recognizable voices in Televisa's campaign for Mexico's bicentennial, Estrellas del Bicentenario.  In 2012 Denise was a member of the Mexican Pop group, MUHU, releasing the single, HOY, in November 2012, and releasing Muhu's second album DIRAS QUE SI in early 2013.  She is currently working as a soloist and producing her next studio album.

Benoît Jutras: Benoît Jutras, (born 1963) is a Canadian composer.  Jutras is best known for his work with the Canadian entertainment company Cirque du Soleil, first as music director and later as composer for several of the company's contemporary circus shows.  Jutras' music often blends eclectic influences, including world beat, classical, rock, trip hop, and electronica.  His scores for Cirque du Soleil shows include "O", "Mystère", "Quidam", and "La Nouba".  His work outside of Cirque du Soleil has included original soundtracks for "Le Rêve" (a show at the Wynn resort in Las Vegas), the "Glow in the Park Parade" (a nighttime parade at Six Flags theme parks), and "The House of Dancing Water" (a show at the City of Dreams resort in Macau).  He has also composed for film and television.

Zumanity: Zumanity is a resident cabaret-style show by Cirque du Soleil at the New York-New York Hotel & Casino on the Las Vegas Strip.  The production was unveiled on September 20, 2003.  It is the first "adult-themed" Cirque du Soleil show, billed as "the sensual side of Cirque du Soleil" or "another side of Cirque du Soleil".  Created by René Richard Cyr and Dominic Champagne, "Zumanity" is a departure from the standard Cirque format.  Intended to be for mature adult audiences only, this show is centered on erotic song, dance, and acrobatics.

Bellagio (resort): Bellagio is a resort, luxury hotel and casino on the Las Vegas Strip in Paradise, Nevada.  It is owned and operated by MGM Resorts International and was built on the site of the demolished Dunes hotel and casino.  Inspired by the Lake Como town of Bellagio in Italy, Bellagio is famed for its elegance.  One of its most notable features is an 8 acre lake between the building and the Strip, which houses the Fountains of Bellagio, a large dancing water fountain synchronized to music.

René Bazinet: René Bazinet (born 1955) is a German-Canadian clown, mime, and stage and film actor.  He is known for his work with Cirque du Soleil, first as a performing artist touring extensively with "Saltimbanco", and later as the clown act creator and acting consultant for the show as well as for Cirque du Soleil's 2011 production "Zarkana".  He has also starred in shows at the Berlin Wintergarten and the Circus Roncalli.

Cirque du Soleil: Fire Within: Cirque du Soleil: Fire Within is a 2002 Canadian reality television mini-series.  The series follows eight Cirque du Soleil performers during the creation and production of the Cirque's touring production, "Varekai".  Stress ensues as several newcomers try to learn new acrobatic acts for the show, while the subplot also follows the crew behind the show trying to cast new performers, advertise the production, create the stage set, costumes, and make-up, and manage the show under the direction of newcomer Dominic Champagne.

Cirque du Soleil: Worlds Away: Cirque du Soleil: Worlds Away is a 2012 American 3D family fantasy film directed by Andrew Adamson.  The film premiered on October 20, 2012 at the Tokyo International Film Festival, and was released theatrically in the United States on December 21, 2012.  Distributed worldwide by Paramount Pictures on December 21, 2012, the film tells the story of a girl named Mia going to a traveling circus and falling in love with its main attraction, the Aerialist.  After the Aerialist falls during his act, he and Mia are transported to another world where each encounter the different worlds of Cirque du Soleil through O, Mystère, Kà, Love, Zumanity, Viva Elvis and Criss Angel Believe.  It stars Erica Linz and Igor Zaripov as the main characters and incorporates acts from some of the Cirque du Soleil shows that were running in Las Vegas in 2011 including O, Mystère, Kà, Love, and Viva Elvis.

Dralion: Dralion (pronounced Drah-lee-on) was a touring production by the Canadian entertainment company Cirque du Soleil.  The show combined elements of traditional Chinese circus with Western contemporary circus, complementing the "East-meets-West" theme implied in the title — the name is a portmanteau of "dragon" (representing the East) and "lion" (representing the West).  It is Cirque du Soleil's 12th touring production and the first Cirque show since 1985 not to be directed by Franco Dragone.  Dralion performed its final show at the Sullivan Arena in Anchorage, Alaska on January 18, 2015, bringing its 15 year world tour to a close.

Supporting paragraphs: O (Cirque du Soleil) Bellagio (resort)
Answer: MGM Resorts International