Question: Riviera Partners is a provider of technical search and recruiting services, specializing in talent acquisition for emerging growth companies, Riviera Partners' clientele includes, Zappos.com is an online shoe and clothing shop based in Las Vegas, in which state?
Sentence (from "Tony Hsieh"): Prior to joining Zappos, Hsieh co-founded the internet advertising network LinkExchange, which he sold to Microsoft in 1999 for $265 million.
Relevant evidence: No