Question: How many rooms are at the hotel where the 2005 Las Vegas Desert Classic was held?
Context: The 2003 Las Vegas Desert Classic was the second Professional Darts Corporation Las Vegas Desert Classic darts tournament.  It was held in the MGM Grand Casino and Hotel, Las Vegas, Nevada in early July. Adrian Lewis (born 21 January 1985) is an English professional darts player for the Professional Darts Corporation (PDC) who is a two-time PDC World Darts Champion.  He is nicknamed Jackpot, following a visit to a casino whilst competing at the 2005 Las Vegas Desert Classic when he "won" a $72,000 jackpot but was unable to claim the money as he was under-age by US gaming laws – despite being eligible in the UK.  During the early part of his career until 2007, he was a protégé of 16-time world champion Phil Taylor, with whom he practised in their home city Stoke-on-Trent.  He made his television debut in 2004, aged 19 at the UK Open. The 2009 Las Vegas Desert Classic was the eighth and final installment of the Las Vegas Desert Classic, a darts tournament organised by the Professional Darts Corporation.  It was held in the evenings (GMT, morning local time/PST) between July 1 and July 5. The 2008 Las Vegas Desert Classic was the seventh installment of the Las Vegas Desert Classic, a darts tournament organised by the Professional Darts Corporation.  It was held in the evenings (GMT, morning local time/PST) between June 30 and July 6. The 2005 Las Vegas Desert Classic was the 2005 edition of the Las Vegas Desert Classic darts tournament.  It was held at the MGM Grand Las Vegas, and was won by Phil Taylor. The 2007 Las Vegas Desert Classic (also billed as Las Vegas Desert Classic VI) was the sixth time that the Professional Darts Corporation stage the prestigious darts tournament.  The tournament was held at the Mandalay Bay Resort and Casino for the second successive year and was staged between July 2 and July 8, televised on Sky Sports from July 4 - there was no title sponsor for the event after PartyPoker.net's sponsorship lasted for just one year. The 2004 Las Vegas Desert Classic, promoted at the time as the Las Vegas Desert Classic III, was the third year that the Professional Darts Corporation held a major darts tournament in the United States.  It was held between 30 June and July 4, 2004. The Las Vegas Desert Classic was a darts tournament, organized by the Professional Darts Corporation (PDC) and was held each year in July from 2002 until 2009.  Its original venue was the MGM Grand Casino and Hotel, Las Vegas, Nevada from 2002 to 2005, but the tournament moved down the strip to the Mandalay Bay Resort and Casino from 2006 to 2009. 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. John Part (born June 29, 1966 in Toronto, Ontario) is a Canadian professional darts player and commentator, who is nicknamed Darth Maple.  Part is a three-times World Champion, having triumphed in the BDO World Championship in 1994 and the PDC World Championship in 2003 and 2008.  Along with these victories, his 2006 Las Vegas Desert Classic title and a host of other tournament wins make him statistically North America's greatest darts player ever.  In 2017, he was inducted into the PDC Hall of Fame for his achievements.
Answer: 5,124