Question: In which city was Jerome D. Mack the president of a casino?

Context paragraphs:
Jerome D. Mack: Jerome D. Mack (a.k.a. Jerry Mack) (November 6, 1920 – September 26, 1998) was an American banker, real estate investor, political fundraiser and philanthropist in Las Vegas, Nevada.  He was the founder and President of the Bank of Las Vegas and, later, the Valley Bank.  He was the President of the Riviera casino as well as Director of the Four Queens and Dunes casinos.  He was a major fundraiser for the Nevada Democratic Party and active in Jewish philanthropy both in Las Vegas and Israel.  He was one of the founders of the University of Nevada, Las Vegas (UNLV).

E. Parry Thomas: Edward Parry Thomas (June 29, 1921 – August 26, 2016) was an American banker who helped finance the development of the casino industry of Las Vegas, Nevada.  Along with his business partner, Jerome D. Mack, he is credited with building Las Vegas into what it is today.

Dublin Jerome High School: Dublin Jerome High School is a public high school located in Dublin, Ohio, northwest of Columbus, Ohio.  It is the newest of the three high schools in the Dublin City Schools district.  Jerome opened for its first year during the 2004-2005 school year.  Though located in the southeast tip of Union County, Dublin Jerome primarily serves students in parts of Franklin County and Delaware County.  The school's principal is Dr. Dustin Miller, and the assistant principals are Andy Wilkinson, Kristy Venne, and Jerry Obney.  The Athletic Director is Ryan Walker.  Jerome's mascot is the Celtic Warrior.  Jerome was ranked number 143 in the Newsweek top high school rankings in 2013.  In 2010, Jerome was honored as a Blue Ribbon School by the US Department of Education.

Henry Jerome: Henry Jerome "(né" Henry Jerome Pasnik; November 12, 1917 in New York City – March 23, 2011 in Plantation, Florida) was an American big band leader, trumpeter, arranger, composer, and record company executive.  Jerome formed his first dance band in 1932 in Norwich, Connecticut.  His bands flourished throughout the 1940s, 1950s, and early 1960s.  Jerome went on to become A&R director at Decca Records in 1959 and A&R director for Coral Records, a Decca subsidiary, in the late 1960s.

Riviera (hotel and casino): Riviera (colloquially, "the Riv") was a hotel and casino on the Las Vegas Strip in Winchester, Nevada, which operated from April 1955 to May 2015.  It was last owned by the Las Vegas Convention and Visitors Authority, which decided to demolish it to make way for the Las Vegas Global Business District.

Henry Jerome de Salis: Henry Jerome de Salis, DD, FRS, FSA, (20 August 1740 – 2 May 1810) was an English churchman.  He was Rector of St. Antholin in the City of London and Vicar of Wing in Buckinghamshire.  He was also known as: "Revd Henry Jerome de Salis, MA"; the Hon. & Rev. Henry Jerome De Salis, Count of the Holy Roman Empire; "Dr. de Salis"; "Rev. Dr. Henry Jerome de Salis", and, from 1809, "Rev. Count Henry Jerome de Salis".

Jerome Avenue: Jerome Avenue is one of the longest thoroughfares in the New York City borough of the Bronx, New York, United States.  The road is 5.6 mi long and stretches from Highbridge general area to Woodlawn.  Both of these termini are with the Major Deegan Expressway which runs parallel to the west.  Most of the elevated IRT Jerome Avenue Line runs along Jerome Avenue.  The Cross Bronx Expressway interchanges with Jerome and the Deegan.  Though it runs through what is now the West Bronx neighborhood, Jerome Avenue is the dividing avenue between the nominal "West" and "East" streets in the Bronx; Fifth Avenue serves Manhattan in the same capacity.

Jerome County, Idaho: Jerome County is a county in the U.S. state of Idaho.  As of the 2010 Census the county had a population of 22,374.  The county seat and largest city is Jerome.  The county was created by the Idaho Legislature on February 8, 1919, by a partition of Lincoln County.  It was named after either Jerome Hill, a developer of the North Side Irrigation Project, his son-in-law Jerome Kuhn, or his grandson Jerome Kuhn, Jr.

Bronx Community Board 7: Bronx Community Board 7 the governing body of Bronx Community District 7, a local government unit of the city of New York.  The Community District encompasses the neighborhoods of Bedford Park, Fordham, Jerome Park, Kingsbridge Heights, Norwood, and University Heights.  It is delimited by the New York-New Haven Railroad, Webster Avenue, East Fordham Road, Jerome Avenue, and West 183rd Street to the east, Jerome Avenue, West Gun Hill Road, Goulden Avenue, Kingsbridge Road, West 225th Street, and the Harlem River to the west, West Gun Hill Road, Jerome Avenue, Bainbridge Avenue, and East 211th Street to the north and Hall of Fame Terrace to the south.

Roy Mack: Roy Mack, born McGillicuddy, (c. 1889 – February 11, 1960) was the co-owner of the Philadelphia Athletics of the American League with his brother Earle Mack from 1950 through 1954 .  In 1954, the brothers sold the Athletics to Arnold Johnson, who moved the team to Kansas City, Missouri one season later.  Mack was the son of Hall of Fame manager and former Athletics owner Connie Mack.  Roy was a graduate of Worcester Academy in Worcester, Massachusetts.

Supporting paragraphs: Jerome D. Mack Riviera (hotel and casino)
Answer: Winchester, Nevada