Question: Who operates the Luxury hotel and casino that is situated on the west side of Las Vegas next to Caesars Palace?

Context paragraphs:
Caesars Atlantic City: Caesars Atlantic City is a luxury hotel, casino, and spa resort in Atlantic City, New Jersey.  Like Caesars Palace in Las Vegas, it has an ancient Roman and ancient Greek theme.  Atlantic City's second casino, it opened in 1979 as the Caesars Boardwalk Regency.  The 124720 sqft .  casino has over 3,400 slot machines, and is one of the largest in Atlantic City.  The resort has experienced much expansion and renovation in the past decade, including a new hotel tower, a new parking garage, and a new shopping center, Playground Pier.  Known to many that visit Atlantic City as the present day "Hub" of the boardwalk.

The Colosseum at Caesars Palace: The Colosseum at Caesars Palace is a theatre located on the Las Vegas Strip in Las Vegas, Nevada.  The theatre is the main entertainment venue for Caesars Palace.  Deemed the "Home of the Greatest Entertainers in the World", the theatre hosts numerous residency shows by Celine Dion, Elton John, Rod Stewart, Cher, Bette Midler, Shania Twain, and Mariah Carey.  Celine Dion has had the longest residency(1,110 shows as of June 2, 2018) at the venue grossing a total of $650 million since her arrival in 2003.  She also performed her record-breaking 1000th show at the venue on October 8, 2016.  The venue has an estimated seating capacity of 4,296 and is inspired by the architecture of ancient Rome along with aspects of contemporary architecture.  The cost of the theatre totaled $108 million, becoming the most expensive entertainment venue in Las Vegas, beating the "O" Theatre at the Bellagio Las Vegas.

Clifford S. Perlman: Clifford "Cliff" S. Perlman (March 30, 1926 – September 4, 2016) was an American entrepreneur and president and CEO of the Caesars Palace casino in Las Vegas for over a decade.  During his ownership he built thousands of additional rooms to what is the current Caesars Palace.  Most notably, Perlman, first introduced live sports and boxing to Las Vegas.  With his brother Stuart, they founded the international fast food franchise Lum's and bought, sold, and operated an airline.

Caesars Palace (disambiguation): Caesars Palace is a casino and luxury hotel in the Las Vegas Strip of Paradise, Nevada.  Its name, or a variation of its name, is given to the following casinos:

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.

Caesars Palace: Caesars Palace is a AAA Four Diamond luxury hotel and casino in Paradise, Nevada, United States.  The hotel is situated on the west side of the Las Vegas Strip between Bellagio and The Mirage.  It is one of the most prestigious casino hotels in the world and one of Las Vegas's largest and best known landmarks.

Caesars Palace 2000: Caesars Palace 2000 is a gambling simulation video game developed by Runecraft and published by Interplay Entertainment.  It was released in North America and Europe in June 2000 for the PlayStation, Dreamcast and Microsoft Windows' PCs.  It is named after the famous Caesars Palace luxury hotel and casino on the Las Vegas Strip in Las Vegas, Nevada.

Caesars Casino Online: CAESARS Casino Online is an internet-based casino, based on the world-famous Caesars Palace casino brand that has been at the center of the Las Vegas strip since 1966.  It is available to anyone 21 years or older inside New Jersey borders, as well as residents of the United Kingdom.  CaesarsCasino.com only operates in legal and licensed and regulated jurisdictions, thus it's limited availability thus far.  On November 21, 2013 Caesars Online Casino was licensed and approved by the state of New Jersey in online gaming for real money.  CaesarsCasino.com is offering a wide variety of online casino games such as slots, blackjack and roulette.

Super Caesars Palace: Super Caesars Palace is a Super Nintendo Entertainment System casino video game centered on Caesars Palace in Las Vegas, Nevada.  It is the follow-up to Virgin's previous "Caesars Palace" game.  "Super Caesars Palace" was also released for the Sega Genesis as simply Caesars Palace.  The Japanese version of the game was followed by a sequel, "Super Casino 2".

Las Vegas Uncork'd: Las Vegas Uncork'd (also referred to as Vegas Uncork'd and Vegas Uncorked) is an annual culinary and wine event in Las Vegas, Nevada.  The concept was developed by the Las Vegas Convention and Visitors Authority, their advertising agency R&R Partners and Las Vegas resort partners who originally considered a number of magazine partners such as Bon Appetit, Food & Wine and Gourmet.  Bon Appetit was selected as the magazine partner after a review with each magazine.  The event was launched in 2007 by the Las Vegas Convention and Visitors Authority, "Bon Appétit" magazine led by Editor-in-Chief Barbara Fairchild and co-creator and Executive Director Rob O'Keefe who led the first five years of development of what Eater.com called "the world's most innovative culinary event".  Las Vegas resort partners over the years include Bellagio, Caesars Palace and Wynn Las Vegas, MGM Grand, Mandalay Bay, The Venetian, Las Vegas and The Palazzo and each year the event features more than 80 celebrated chefs and over 25 events occurring over a spectacular four-day weekend.

Supporting paragraphs: Caesars Palace Bellagio (resort)
Answer: MGM Resorts International