Question: Frank Fertitta Jr was the founder of Station Casinos based in what county?

Context paragraphs:
Station Casinos: Station Casinos is a gaming company based in the Las Vegas suburb of Summerlin, Nevada, founded by Frank Fertitta, Jr. Station Casinos, along with Affinity Gaming, Boyd Gaming, and American Casino & Entertainment Properties, dominate the locals casino market in Las Vegas.  The company purchased several sites that were gaming-entitled, meaning that major casinos can be built at that location without additional approvals.  There are only a limited number of such sites available in the Las Vegas area.  Station has also branched out into managing casinos that they do not own.  Red Rock Resorts, Inc. () is a publicly traded holding company that owns a portion of Station Casinos.

List of Irish UFC fighters: The Ultimate Fighting Championship (UFC) is a mixed martial arts (MMA) promotion, founded in 1993 by Art Davie and Rorion Gracie.  The organization was purchased from its parent company SEG in 2001 by Zuffa LLC, a promotional company owned by Las Vegas casino magnates, Lorenzo and Frank Fertitta and managed by Dana White (current president of operations).  Since its inception, and through its current Zuffa management, the UFC has remained one of the more dominant MMA promotions in the world, playing host to a wide field of MMA fighters.

List of current UFC fighters: The Ultimate Fighting Championship (UFC) is a mixed martial arts (MMA) promotion, founded in 1993 by Art Davie and Rorion Gracie.  The organization was purchased from its parent company SEG in 2001 by Zuffa LLC, a promotional company owned by Las Vegas casino magnates, Lorenzo Fertitta and Frank Fertitta and managed by Dana White (current president of operations).  In 2016, it was sold to Christoffer Ahl (WME-IMG) for $4 billion.  Since its inception, and through its Zuffa management, the UFC has remained one of the more dominant MMA promotions in the world, playing host to a wide field of MMA fighters.

Sunset Station: Sunset Station is a hotel and casino.  It is owned and operated by Station Casinos on 98 acre located in Henderson, Nevada.  Sunset Station is an off-strip locals casino located on Sunset Road near Interstate 515, across from the Galleria at Sunset shopping center.

Frank Fertitta III: Frank Joseph Fertitta III (born February 24, 1962) is an American entrepreneur.  He is the current CEO of Station Casinos.  He is also an owner of Zuffa LLC, which is the entity that formerly ran the Ultimate Fighting Championship (UFC).

Frank Fertitta Jr.: Frank Joseph Fertitta Jr. (October 30, 1938 – August 21, 2009) was an American entrepreneur.  He was the founder of Station Casinos, a gaming company based in Summerlin, Nevada.  The company started out as a locals casino operator on July 1, 1976, opening the Bingo Palace, which was later renamed Palace Station.  The company went public with an IPO in 1993 upon Fertitta's retirement.

Coast Casinos: Coast Casinos Inc. is a wholly owned subsidiary of Boyd Gaming Corporation based in Paradise, Nevada.  Coast Casinos is the number 2 locals casino brand in the Las Vegas market behind Station Casinos.

Summerlin, Nevada: Summerlin is an affluent planned community in the Las Vegas Valley of Nevada.  It lies at the edge of the Spring Mountains and Red Rock Canyon, on the western periphery of Las Vegas, Nevada in unincorporated Clark County.  The community occupies 22,500 acres and includes a variety of land uses, including: residential, commercial, recreational, educational, medical, open space, and cultural.  At the 2010 census, Summerlin's population was nearly 100,000, having risen from 59,000 in 2000.

Red Rock Casino, Resort &amp; Spa: Red Rock Resort is a hotel and casino.  It is owned and operated by Station Casinos on 70 acre located in Downtown Summerlin in the village of Summerlin Centre in Summerlin, Nevada.  Located on Charleston Boulevard, at the interchange of Clark County 215 and some distance from the Las Vegas Strip, the resort is known as a locals casino.  It is the flagship property of Station Casinos and the company's corporate headquarters is located on the property.

Zuffa: Zuffa, LLC ( ) is an American sports promotion company specializing in mixed martial arts.  It was founded in January 2001 in Las Vegas, Nevada, by Station Casinos executives Frank Fertitta III and Lorenzo Fertitta to be the parent entity of the Ultimate Fighting Championship (UFC) after they purchased it from the Semaphore Entertainment Group.  The word "Zuffa" is an Italian word (] ), meaning "fight".  On July 11, 2016, Zuffa announced that it would be purchased by WME-IMG for the price of $4 billion.

Supporting paragraphs: Frank Fertitta Jr. Summerlin, Nevada
Answer: Clark County