Question: Who operate the luxury hotel in which the show "O" was staged? 
Context: The St. Nicholas Hotel was a 600-room, mid-nineteenth century luxury hotel in New York City.  It opened on January 6, 1853, and by the end of the year had expanded to 1,000 rooms.  The St.Nicholas raised the bar for a new standard of lavish appointments for a luxury hotel.  It was the first New York City building to cost over $1million.  The hotel was said to have ended the Astor House's preeminence in New York hostelry. The Waldorf Astoria New York is a luxury hotel in Manhattan, New York City.  The hotel has been housed in two historic landmark buildings in New York.  The first, bearing the same name, was built in two stages, as the Waldorf Hotel and the Astoria Hotel, which accounts for its dual name.  That original site was situated on Astor family properties along Fifth Avenue, opened in 1893, and designed by Henry J. Hardenbergh.  It was demolished in 1929 to make way for the construction of the Empire State Building.  The present building, at 301 Park Avenue between 49th and 50th Streets in Midtown Manhattan, is a 47-story 190.5 m Art Deco landmark designed by architects Schultze and Weaver, which was completed in 1931.  The current hotel was the world's tallest hotel from 1931 until 1963, when it was surpassed by Moscow's Hotel Ukraina by 7 m .  An icon of glamour and luxury, the current Waldorf Astoria is one of the world's most prestigious and best known hotels.  Waldorf Astoria Hotels and Resorts is a division of Hilton Hotels, and a portfolio of high-end properties around the world, now operate under the name, including New York. 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. The Savoy Hotel is a luxury hotel located in the Strand in the City of Westminster in central London, England.  Built by the impresario Richard D'Oyly Carte with profits from his Gilbert and Sullivan opera productions, it opened on 6 August 1889.  It was the first in the Savoy group of hotels and restaurants owned by Carte's family for over a century.  The Savoy was the first luxury hotel in Britain, introducing electric lights throughout the building, electric lifts, bathrooms in most of the lavishly furnished rooms, constant hot and cold running water and many other innovations.  Carte hired César Ritz as manager and Auguste Escoffier as chef de cuisine; they established an unprecedented standard of quality in hotel service, entertainment and elegant dining, attracting royalty and other rich and powerful guests and diners. Conrad Indianapolis is a high-rise luxury hotel in Indianapolis, Indiana.  It was completed in 2006 and has 23 floors.  The building includes street level retail and 243 luxury hotel rooms with 18 residential condominiums.  Conrad Hotels is the luxury brand of Hilton Hotels & Resorts, and the Conrad Indianapolis is one of four Conrad Hotels in the United States, the other three being located in Miami, Chicago and New York City.  In 2007 and 2008, "Conde Nast Traveler" ranked Conrad Indianapolis in the top 100 in the world, and Expedia Insiders’ 2009 Select list of the world's best hotels named Conrad as number one in the United States. Grand Hyatt Taipei () is a 5-star luxury hotel in Taipei, Taiwan.  Located in the Xinyi District, the 27-story hotel is adjacent to Taipei 101, Taipei World Trade Center complex, Taipei City Council, Taipei International Convention Center, and various shopping malls and entertainment venues.  Opened in 1990 as "the first, true international luxury hotel in the capital."  The hotel is owned by Hong Leong Group and operated by Hyatt Hotels Corporation. The International Luxury Hotel Association (ILHA) is a nonprofit organization whose purpose is unifying and advancing the luxury hospitality industry.  The association is the luxury hotel industry’s influencer that reaches hotel and travel professionals through its media channels and publications.  It brings together industry experts and thought leaders to answer the greatest challenges facing the luxury hotel business today. 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. The Radisson Blu Iveria Hotel is a hotel in the city center of Tbilisi located on Rose Revolution Square.  The hotel was built in 1967 by the Soviet government as the premier luxury hotel of the Georgian Soviet Socialist Republic and was named Hotel Iveria after the ancient kingdom of Iveria.  As a result of the war in Abkhazia in 1992, the hotel became a refugee camp housing more than 800 refugees.  In 2004 the refugees were removed from the hotel and offered $7000 per room.  The dilapidated hotel was stripped down to its steel structural frame and completely rebuilt as a modern luxury business hotel, managed by the Radisson Hotels group.  It reopened in 2009 as the Radisson Blu Iveria Hotel. The Ritz-Carlton, Georgetown is a luxury hotel located in the Georgetown neighborhood of Washington, D.C., in the United States.  It is near The Kennedy Center and the Georgetown waterfront.  It is an AAA 5-star luxury hotel, and has 86 rooms, 27 premier suites, and five luxury suites.  All rooms and suites have a view of the Potomac River and historic Georgetown.  It contains a 140 ft smokestack coming from the lobby fireplace.  It is a small hotel and is known to be good for privacy.  The hotel contains a restaurant, bar, and a fitness center with a newly refreshed spa after a $1.5 million dollar renovation in 2016.  The rooms are on average 450 sqft in size and is located in a historic industrial building.
Answer: MGM Resorts International