Question: What connects the CityCenter to the Monte Carlo Resort and Casino?
Context: Monte Carlo is a 2011 American romantic comedy film based on "Headhunters" by Jules Bass.  It was directed by Thomas Bezucha.  Denise Di Novi, Alison Greenspan, Nicole Kidman, and Arnon Milchan produced the film for Fox 2000 Pictures and Regency Enterprises.  It began production in Harghita, Romania on May 5, 2010.  "Monte Carlo" stars Selena Gomez, Leighton Meester and Katie Cassidy as three friends posing as wealthy socialites in Monte Carlo, Monaco.  The film was released on July 1, 2011.  It features the song "Who Says" by Selena Gomez & the Scene and numerous songs by British singer Mika.  "Monte Carlo" received mixed to negative reviews from critics, but earned over $39 million on a $20 million budget.  Fox Home Entertainment released "Monte Carlo" on DVD and Blu-ray Disc on October 18, 2011. Corey Sanders has served as Chief Operating Officer of MGM Resorts International since June 2010.  He oversees operations at the Company’s wholly owned properties, which in Nevada include Bellagio (resort), MGM Grand Las Vegas, Mandalay Bay, The Mirage, New York-New York Hotel and Casino, Monte Carlo Resort and Casino, Luxor Las Vegas, Excalibur Hotel and Casino, Circus Circus Las Vegas, Circus Circus Reno, Gold Strike Jean and Railroad Pass Casino.  He also oversees Beau Rivage (Mississippi) in Biloxi and Gold Strike Tunica, both in Mississippi, as well as MGM Grand Detroit. CityCenter (also known as CityCenter Las Vegas) is a 16797000 sqft mixed-use, urban complex on 76 acre located on the Las Vegas Strip in Paradise, Nevada.  The project was started by MGM Resorts International; Dubai World became a joint partner during the project's construction phase.  It is the largest privately funded construction project in the history of the United States.  The project is connected by a people mover system to adjacent MGM properties Monte Carlo Las Vegas and Bellagio Las Vegas.  As of 2015, the "CityCenter" branding has been largely retired, with the focus instead on the Aria brand of the development's centerpiece property in names such as the "Aria Express" (formerly "CityCenter Tram") and "Aria Art Collection" (formerly "CityCenter Art Collection"). Monte Carlo (] ; French: "Monte-Carlo" , ] , or colloquially "Monte-Carl", ] ; Monégasque: "Monte-Carlu") officially refers to an administrative area of the Principality of Monaco, specifically the ward of Monte Carlo/Spélugues, where the Monte Carlo Casino is located.  Informally the name also refers to a larger district, the Monte Carlo Quarter (corresponding to the former municipality of Monte Carlo), which besides Monte Carlo/Spélugues also includes the wards of La Rousse/Saint Roman, Larvotto/Bas Moulins, and Saint Michel.  The permanent population of the ward of Monte Carlo is about 3,500, while that of the quarter is about 15,000.  Monaco has four traditional quarters.  From west to east they are: Fontvieille (the newest), Monaco-Ville (the oldest), La Condamine, and Monte Carlo. The Monte Carlo Resort and Casino is a megaresort hotel and casino on the Las Vegas Strip in Paradise, Nevada, United States.  The hotel, with a height of 360 ft , has 32 floors, featuring a 102000 sqft casino floor with 1,400 slot machines, 60 table games, and 15 poker tables.  It is owned and operated by MGM Resorts International.  The hotel offers 2,992 guest rooms, including 259 luxury suites.  It is being converted from late 2016 to 2018 into the Park MGM, with the upper floors converted into a boutique hotel, NoMad Las Vegas. Quantum Monte Carlo encompasses a large family of computational methods whose common aim is the study of complex quantum systems.  One of the major goals of these approaches is to provide a reliable solution (or an accurate approximation) of the quantum many-body problem.  The diverse flavor of quantum Monte Carlo approaches all share the common use of the Monte Carlo method to handle the multi-dimensional integrals that arise in the different formulations of the many-body problem.  The quantum Monte Carlo methods allow for a direct treatment and description of complex many-body effects encoded in the wave function, going beyond mean field theory and offering an exact solution of the many-body problem in some circumstances.  In particular, there exist numerically exact and polynomially-scaling algorithms to exactly study static properties of boson systems without geometrical frustration.  For fermions, there exist very good approximations to their static properties and numerically exact exponentially scaling quantum Monte Carlo algorithms, but none that are both. In chemistry, dynamic Monte Carlo (DMC) is a Monte Carlo method for modeling the dynamic behaviors of molecules by comparing the rates of individual steps with random numbers.  It is essentially the same as Kinetic Monte Carlo.  Unlike the Metropolis Monte Carlo method, which has been employed to study systems at equilibrium, the DMC method is used to investigate non-equilibrium systems such as a reaction, diffusion, and so-forth (Meng and Weinberg 1994).  This method is mainly applied to analyze adsorbates' behavior on surfaces.  The DMC method is very similar to the kinetic Monte Carlo method. In mathematical finance, a Monte Carlo option model uses Monte Carlo methods to calculate the value of an option with multiple sources of uncertainty or with complicated features.  The first application to option pricing was by Phelim Boyle in 1977 (for European options).  In 1996, M. Broadie and P. Glasserman showed how to price Asian options by Monte Carlo.  In 2001 F. A. Longstaff and E. S. Schwartz developed a practical Monte Carlo method for pricing American-style options. Officially named "Casino de Monte-Carlo", the Monte Carlo Casino is a gambling and entertainment complex located in Monaco.  It includes a casino, the Grand Théâtre de Monte Carlo, and the office of Les Ballets de Monte Carlo. CASINO is a quantum Monte Carlo program developed by the Theory of Condensed Matter group at the Cavendish Laboratory in Cambridge.  CASINO can be used to perform variational quantum Monte Carlo and diffusion quantum Monte Carlo calculations for both periodic and non-periodic systems.
Answer: a people mover system