Question: Which Riviera Partners' clientele is located in Las Vegas, Nevada?

Context paragraphs:
Las Vegas Valley: The Las Vegas Valley is a major metropolitan area located in the southern part of the U.S. state of Nevada.  The largest urban agglomeration in the state, it is the heart of the Las Vegas–Paradise-Henderson, NV MSA.  The Valley is largely defined by the Las Vegas Valley landform, a 600 sqmi basin area surrounded by mountains to the north, south, east and west of the metropolitan area.  The Valley is home to the three largest incorporated cities in Nevada: Las Vegas, Henderson and North Las Vegas.  Five unincorporated towns governed by the Clark County government are part of the Las Vegas Township and constitute the largest community in the state of Nevada.

SLS station: SLS station (originally Sahara) is a station on the Las Vegas Monorail, in Las Vegas, Nevada, United States.  The station is a side platform located at the Sahara Hotel and Casino.  The Sahara Station could be reached in two ways: from inside the hotel via a hallway located behind the Casbar Theatre Lounge (closed on May 16, 2011) or from street level on Paradise Road behind the Sahara.  The tracks just north of Sahara station were designed to provide access to a possible downtown extension of the monorail via the northern portion of the Las Vegas Strip in the area of the Circus Circus Las Vegas and the Riviera.

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).

Air Vegas: Air Vegas (IATA: 6V, ICAO: VGA, Call sign: Air Vegas) was an airline with its headquarters on the grounds of the North Las Vegas Air Terminal in North Las Vegas, Nevada.  It operated daily sightseeing flights from Las Vegas to the Grand Canyon.  Prior to moving to the North Las Vegas Airport its main bases were McCarran International Airport (LAS), Las Vegas and Henderson Executive Airport (HND), Las Vegas.

Las Vegas Uncork'd: Las Vegas Uncork'd (also referred to as Vegas Uncork'd and Vegas Uncorked) is an annual culinary and wine event in Las Vegas, Nevada.  The concept was developed by the Las Vegas Convention and Visitors Authority, their advertising agency R&R Partners and Las Vegas resort partners who originally considered a number of magazine partners such as Bon Appetit, Food & Wine and Gourmet.  Bon Appetit was selected as the magazine partner after a review with each magazine.  The event was launched in 2007 by the Las Vegas Convention and Visitors Authority, "Bon Appétit" magazine led by Editor-in-Chief Barbara Fairchild and co-creator and Executive Director Rob O'Keefe who led the first five years of development of what Eater.com called "the world's most innovative culinary event".  Las Vegas resort partners over the years include Bellagio, Caesars Palace and Wynn Las Vegas, MGM Grand, Mandalay Bay, The Venetian, Las Vegas and The Palazzo and each year the event features more than 80 celebrated chefs and over 25 events occurring over a spectacular four-day weekend.

Sports in the Las Vegas metropolitan area: The Las Vegas metropolitan area is home to many sports, most of which take place in the unincorporated communities around Las Vegas rather than in the city itself.  The Las Vegas Valley has one major league professional team: the Vegas Golden Knights of the National Hockey League (NHL) who began play in 2017 as the region's first major pro team.  The Oakland Raiders of the National Football League (NFL) will begin play in Las Vegas as the "Las Vegas Raiders" by 2020 and become the region's second major professional team.  Las Vegas is also home to one minor league sports team: the Las Vegas 51s of the Triple-A Pacific Coast League (Minor League Baseball).  The 51s are currently the only team to actually play in the city of Las Vegas, playing at the city owned Cashman Field.  They will be joined in 2018 by the Las Vegas Lights FC of the United Soccer League, one of two leagues that collectively make up the second level of the U.S. men's soccer league system.

Zappos: Zappos.com is an online shoe and clothing shop based in Las Vegas, Nevada.

Riviera Partners: Riviera Partners is a provider of technical search and recruiting services, specializing in talent acquisition for emerging growth companies.  Since its inception, Riviera Partners has focused on building technology teams primarily for startup companies.  Riviera Partners' clientele includes, among others, ServiceNow, Xoom, One Kings Lane, Uber, Path, Okta, Pure Storage, Twitter, LinkedIn, Dropbox, Pinterest, and Zappos.

Fabrizio Boccardi: Fabrizio Boccardi is an Italian American entrepreneur, investor, and producer.  Boccardi is the owner and creator of the multimedia brand the Tyrant.  In addition, he controls several investments,including Media, technology, and Gaming in the United States and abroad.  Boccardi has attempted to buy control of a Las Vegas casino, most notably Riviera Holdings, former owner of the Riviera Hotel & Casino on the strip of Las Vegas, and Riviera Casino in Black Hawk Colorado.

Las Vegas–Paradise, NV MSA: The Las Vegas–Paradise, NV MSA, also known as the Las Vegas–Henderson–Paradise, NV Metropolitan Statistical Area (2013), is in the southern part of the U.S. state of Nevada, coextensive since 2003 with Clark County, Nevada.  A central part of the metropolitan area is the Las Vegas Valley, a 600 sqmi basin that includes the metropolitan area's largest city, Las Vegas as well as the other primary city, Paradise, Nevada.  The area contains the largest concentration of people in the state.  Cities in the metropolitan area include Las Vegas, Henderson, North Las Vegas, and Boulder City.  The metropolitan area is one of the top tourist destinations in the world, drawing over 40 million international and domestic visitors in 2013 with a GMP of US$103.3 billion.

Supporting paragraphs: Riviera Partners Zappos
Answer: Zappos