Question: The station MGM Grand station is a station on is how many miles long?

Context paragraphs:
Bang Sue Central Station: Bang Sue Central Station (Thai: สถานีกลางบางซื่อ , rtgs: "Sathani Klang Bang Sue" ,  ] ) or Bang Sue Grand Station will be the new railway hub of Thailand, located in Chatuchak, Bangkok.  It will replace the currently in use Bangkok Railway Station at Hua Lamphong as the terminus for all long-distance rail services from Bangkok.  The station is under construction and is expected to be completed by 2019.  The station will replace the existing Bang Sue Junction Railway Station and incorporate Bang Sue MRT Station.

Wollunqua: In Australian aboriginal mythology, Wollunqua (or Wollunka, Wollunkua) is a snake-god of rain and fertility, who emerged from a watering hole in the Murschison Mountains.  Wollunqua is said to be many miles long.

MGM Grand Las Vegas: The MGM Grand Las Vegas (formerly Marina and MGM-Marina) is a hotel and casino located on the Las Vegas Strip in Paradise, Nevada.  The MGM Grand is the largest single hotel in the United States with 5,124 rooms.  It is also the third-largest hotel complex in the world by number of rooms and second-largest hotel resort complex in the United States behind the combined The Venetian and The Palazzo.  When it opened in 1993, the MGM Grand was the largest hotel complex in the world.

Las Vegas Monorail: The Las Vegas Monorail is a 3.9 mi monorail mass transit system located adjacent to the Las Vegas Strip, in Clark County, Nevada, United States.  It connects several large casinos in the unincorporated communities of Paradise and Winchester, and does not enter the City of Las Vegas.  It is owned and operated by the Las Vegas Monorail Company.  In 2013, total annual ridership was roughly 4.2 million, down from a pre-Great Recession peak of 7.9 million in 2007.  The monorail is a registered not-for-profit corporation, allowed under Nevada law since the monorail provides a public service.  The State of Nevada assisted in bond financing, but no public money was used in construction.

Rock shelter: A rock shelter — also rockhouse, crepuscular cave, bluff shelter, or abri — is a shallow cave-like opening at the base of a bluff or cliff.  In contrast to solutional cave (karst) caves, which are often many miles long, rock shelters are almost always modest in size and extent.

MGM Grand station: MGM Grand station is a station on the Las Vegas Monorail.  The station is the southern-most on the Las Vegas Monorail's route.

Grand Trunk Station (South Paris): The Grand Trunk Station was a historic railroad station in South Paris, Maine.  The station was built in 1883 by the Grand Trunk Railroad linking South Paris with Montreal and Portland, Maine.  Trains began regular operation between Portland and the depot on the Paris side of the town line with Oxford at Widow Merrill's crossing October 8, 1849, even though the station was listed as "North Oxford" in timetables.  The first train into South Paris village was a contractor's engine called the Jenny Lind on January 1, 1850.  It ran carefully across temporary bridgework up to where the station was being built, as a means of satisfying the investors worries from Paris Hill to counter their threat of withdrawing their support and money if there was not a train in the village proper on that date (an engine operating by itself without cars met the ruling of a train).  The Androscoggin bridge was completed March 15, 1850, with regular service to Portland from the present day station grounds to Portland beginning on the 18th.  On December 30, 1879, the Norway Branch Railroad opened, running from Norway village on a line 1.45 miles long to connect with the Grand Trunk Railroad at South Paris.

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.

MGM Resorts International: MGM Resorts International is a global hospitality and entertainment company operating destination resorts in Las Vegas, Mississippi, New Jersey and Detroit, including Bellagio, MGM Grand, Mandalay Bay and The Mirage.  The company recently opened MGM National Harbor in Maryland and is developing MGM Springfield in Massachusetts.  It has a majority interest in MGM China Holdings Limited, which owns the MGM Macau resort and casino and is developing a gaming resort in Cotai.  MGM Resorts owns 50 percent of CityCenter in Las Vegas, which features ARIA Resort & Casino.  It has a majority controlling interest in MGM Growth Properties, a real estate investment trust.

Kinzie (Northwestern Elevated station): Kinzie was a station on the Northwestern Elevated Railroad's North Side Main Line, which is now part of the Chicago Transit Authority's Brown Line.  The station was located at Kinzie Street and Wells Street in the Near North Side neighborhood of Chicago.  Kinzie opened on May 31, 1900, and closed in 1921; it was replaced by the Grand station.

Supporting paragraphs: MGM Grand station Las Vegas Monorail
Answer: 3.9