Question: What 43-story luxury resort and casino on the Las Vegas Strip hosted the lightweight title boxing match, David Diaz vs. Manny Pacquiano?

Context paragraphs:
Cosmopolitan of Las Vegas: The Cosmopolitan of Las Vegas (commonly referred to simply as The Cosmopolitan or The Cosmo) is a luxury resort casino and hotel on the Las Vegas Strip in Paradise, Nevada.  The resort opened on December 15, 2010, and is located just south of the Bellagio on the west side of Las Vegas Boulevard.

Wynn Las Vegas: Wynn Las Vegas, often simply referred to as Wynn, is a luxury resort and casino located on the Las Vegas Strip in Paradise, Nevada.  The US$2.7-billion resort is named after casino developer Steve Wynn and is the flagship property of Wynn Resorts.  The resort covers 215 acre .  It is located at the northeast corner of Las Vegas Boulevard and Sands Avenue, directly across The Strip from the Fashion Show Mall.

William Irwin (boxer): William "Billy" 'The Kid' Irwin ( (1968--) 20 1968 (age (2017)-(1968)-((11)<(05)or(11)==(05)and(29)<(20)) ) ) born Niagara Falls, Ontario, is a retired Canadian amateur lightweight and professional light/light welter/welterweight boxer of the 1990s and 2000s who as an amateur won a bronze medal in the Boxing at the 1991 Pan American Games in Havana, Cuba, losing to eventual silver medal winner Patrice Brooks of the United States, represented Canada at the 1991 World Amateur Boxing Championships in Sydney, Australia losing to Julien Lorcy of France, and represented Canada at the 1992 Summer Olympics in Barcelona, Spain, he was stopped in the second round of the lightweight division (– 60 kg) by Ronald Chavez of the Philippines, and as a professional won the Canadian Professional Boxing Council (CPBC) lightweight title, Canada lightweight title, International Boxing Organization (IBO) lightweight title, World Boxing Council (WBC) Continental Americas lightweight title, and Commonwealth lightweight title, and was a challenger for the International Boxing Federation (IBF) lightweight title against Paul Spadafora, and World Boxing Association (WBA) World lightweight title against Juan Díaz, his professional fighting weight varied from 133+1/2 lb , i.e. lightweight to 142 lb , i.e. welterweight.  He retired from boxing after losing to Juan Diaz in 2005, his second unsuccessful world title challenge.  His final record was 42(30)–6–0.

Trump International Hotel Las Vegas: The Trump International Hotel Las Vegas is a 64-story luxury hotel, condominium, and timeshare located on Fashion Show Drive near Las Vegas Boulevard, just off the Las Vegas Strip in Paradise, Nevada, named for real estate developer and the 45th and current President of the United States Donald Trump.  It is located across the street from Wynn Las Vegas, behind Alon Las Vegas on 3.46 acre , near the Fashion Show Mall, and features both non-residential hotel condominiums and residential condominiums.  The exterior glass is infused with gold.  The hotel is a member of The Leading Hotels of the World.

Sylvester Mittee: Sylvester "The Master Blaster" Mittee ( (1956--) 29 1956 (age 61 ) ) is a Saint Lucian/British amateur lightweight and professional light welter/welter/light middleweight boxer of the 1970s and '80s who as an amateur won the 1973 Amateur Boxing Association of England (ABAE) Junior Class-B title boxing out of Crown and Manor ABC , Hoxton, London, won the 1976 Amateur Boxing Association of England (ABAE) lightweight title, against Thomas McCallum (Sparta BC), boxing out of Repton Amateur Boxing Club , Bethnal Green, London, and represented Great Britain as a lightweight in the Boxing at the 1976 Summer Olympics in Montreal, Quebec, Canada, losing to eventual silver medal winner Simion Cuţov of Romania, and as a professional won the British Boxing Board of Control (BBBofC) Southern (England) Area light welterweight title, BBBofC British welterweight title and Commonwealth welterweight title, and was a challenger for the BBBofC British light welterweight title against Clinton McKenzie, and European Boxing Union (EBU) welterweight title against Lloyd Honeyghan, his professional fighting weight varied from 139 lb , i.e. light welterweight to 151+1/2 lb , i.e. light middleweight.

Manny Pacquiao vs. David Díaz: David Diaz vs. Manny Pacquiao, billed as Lethal Combination, was a lightweight title boxing match.  The bout took place on June 28, 2008 at the Mandalay Bay, Las Vegas, Nevada, United States.  Pacquiao defeated Diaz via technical knockout in the ninth round.  The fight sealed Pacquiao's status as the best pound-for-pound fighter after he was elevated to the #1 spot because of the retirement of the undefeated five-division champion Floyd Mayweather Jr. weeks prior to the fight and put Pacquiao's name in the history books as the only Asian fighter to win five world titles in five weight classes.

Encore Las Vegas: Encore Las Vegas (also called Encore at Wynn Las Vegas; often just called Encore) is a luxury resort, casino and hotel located on the Las Vegas Strip in Paradise, Nevada.  The resort is connected to its sister resort, Wynn Las Vegas; both are owned by Wynn Resorts, headed by casino developer Steve Wynn.

Carl Crook: Carl Crook (born 10 November 1963 in Bolton) is an English amateur lightweight and professional light/light welterweight boxer of the 1980s and 1990s, who as an amateur was runner-up in the 1985 Amateur Boxing Association of England (ABAE) lightweight title, against Edmond McAuley (Hogarth ABC), boxing out of Chorley ABC, and as a professional won the British Boxing Board of Control (BBBofC) Central Area lightweight title, BBBofC British lightweight title, and Commonwealth lightweight title, and was a challenger for the EBU (European) lightweight title against Antonio Renzo, and Jean Baptiste Mendy, his professional fighting weight varied from 132 lb , i.e. lightweight to 137 lb , i.e. light welterweight.

Sky Las Vegas: Sky Las Vegas is a 45-story luxury high-rise condominium tower with 409 units, situated on a 3-acre site on the Las Vegas Strip in Winchester, Nevada.  The tower's land, as well as nearby property, had been the site of the El Rancho Vegas hotel and casino from 1941 to 1960, when it burned down.  The property remained vacant for decades.  A two-story retail project had been planned for a portion of the site in 2001, although it ultimately did not materialize.  Plans for Sky Las Vegas were announced in July 2004, with construction beginning the following year and its opening occurring in May 2007.

Mandalay Bay: Mandalay Bay is a 43-story luxury resort and casino on the Las Vegas Strip in Paradise, Nevada.  It is owned and operated by MGM Resorts International.  One of the property's towers operates as the Delano; the Four Seasons Hotel is independently operated within the Mandalay Bay tower, occupying 5 floors (35–39).

Supporting paragraphs: Manny Pacquiao vs. David Díaz Mandalay Bay
Answer: Mandalay Bay