Question: What is the enrollment of undergraduates at the alma mater of the man who owns the gold spike in the home of the World Series of Poker?

full_context: Document 1: LinkExchange: It was founded in March 1996 by 23-year-old Harvard graduates Tony Hsieh (who later went on to invest in and become the CEO of Zappos) and Sanjay Madan. Ali Partovi later joined them as a third partner in August 1996. In November 1996, when the company consisted of about 10 people, it moved from Hsieh's and Madan's living room to an office in San Francisco. In May 1997, the company received US$3 million in funding from Sequoia Capital.
Document 2: World Series of Poker: In 2004, Harrah's Entertainment (now Caesars Entertainment) purchased Binion's Horseshoe, retained the rights to the Horseshoe and World Series of Poker brands, sold the hotel and casino to MTR Gaming Group, and announced that the 2005 Series events would be held at the Harrah's - owned Rio Hotel and Casino, located just off the Las Vegas Strip. The final two days of the main event in 2005 were held downtown at what is now the MTR - operated ``Binion's ''in celebration of the centennial of the founding of Las Vegas. The WSOP also added a made - for - television $2 million`` freeroll'' invitational Tournament of Champions (TOC) event first won by Annie Duke as a ``winner - take - all ''event.
Document 3: 2017 World Series of Poker: The 2017 World Series of Poker was the 48th annual World Series of Poker (WSOP). It took place from May 30 - July 17 at the Rio All - Suite Hotel & Casino in Las Vegas, Nevada. There was a record 74 bracelet events including the third edition of the $565 Colossus tournament and the $10,000 No Limit Hold'em Main Event, which began on July 8.
Document 4: Harvard University: Harvard's 2,400 professors, lecturers, and instructors instruct 7,200 undergraduates and 14,000 graduate students. The school color is crimson, which is also the name of the Harvard sports teams and the daily newspaper, The Harvard Crimson. The color was unofficially adopted (in preference to magenta) by an 1875 vote of the student body, although the association with some form of red can be traced back to 1858, when Charles William Eliot, a young graduate student who would later become Harvard's 21st and longest-serving president (1869–1909), bought red bandanas for his crew so they could more easily be distinguished by spectators at a regatta.
Document 5: World Series of Poker: The World Series of Poker (WSOP) is a series of poker tournaments held annually in Las Vegas and, since 2005, sponsored by Caesars Entertainment Corporation (known as Harrah's Entertainment until 2010). It dates its origins to 1970, when Benny Binion invited seven of the best - known poker players to the Horseshoe Casino for a single tournament, with a set start and stop time, and a winner determined by a secret ballot of the seven players.
Document 6: Harvard University: Undergraduate admission to Harvard is characterized by the Carnegie Foundation as "more selective, lower transfer-in". Harvard College accepted 5.3% of applicants for the class of 2019, a record low and the second lowest acceptance rate among all national universities. Harvard College ended its early admissions program in 2007 as the program was believed to disadvantage low-income and under-represented minority applicants applying to selective universities, yet for the class of 2016 an Early Action program was reintroduced.
Document 7: Harvard University: Established originally by the Massachusetts legislature and soon thereafter named for John Harvard (its first benefactor), Harvard is the United States' oldest institution of higher learning, and the Harvard Corporation (formally, the President and Fellows of Harvard College) is its first chartered corporation. Although never formally affiliated with any denomination, the early College primarily trained Congregationalist and Unitarian clergy. Its curriculum and student body were gradually secularized during the 18th century, and by the 19th century Harvard had emerged as the central cultural establishment among Boston elites. Following the American Civil War, President Charles W. Eliot's long tenure (1869–1909) transformed the college and affiliated professional schools into a modern research university; Harvard was a founding member of the Association of American Universities in 1900. James Bryant Conant led the university through the Great Depression and World War II and began to reform the curriculum and liberalize admissions after the war. The undergraduate college became coeducational after its 1977 merger with Radcliffe College.
Document 8: Reid Hoffman: Hoffman co-founded LinkedIn in December 2002 with two former colleagues from SocialNet (including Allen Blue), a former college classmate and a former colleague from his time at Fujitsu. It launched on May 5, 2003, as one of the first business-oriented online social networks. Peter Thiel and Keith Rabois, colleagues of Hoffman's at PayPal, invested in LinkedIn. By November 2014, LinkedIn had over 332 million members in more than 200 countries and territories. The site allows registered users to create professional profiles and connect with each other. Users can invite anyone (whether a site user or not) to become a connection. According to Forbes, "LinkedIn is, far and away, the most advantageous social networking tool available to job seekers and business professionals today."Hoffman was LinkedIn's founding CEO for the first four years before becoming chairman and president of products in February 2007. He became executive chairman in June 2009. With the IPO of LinkedIn on May 19, 2011, Hoffman owns a stake worth an estimated $2.34 billion, not including any potential benefits from Greylock Partners, where he was named a partner in 2009. Hoffman believes that many people still do not know how to use its service and it is LinkedIn's job to help them out. In an interview, Hoffman said that "you have to think proactively about how to use a tool that enables your ability to move in ways that you weren't able to move before, and most of people are not very good at that".Microsoft proposed to acquire LinkedIn on June 13, 2016 for $26.2 billion in cash. Hoffman became a Microsoft board member on March 14, 2017.
Document 9: The Linq: The Linq (formerly Flamingo Capri, Imperial Palace and The Quad) is a 2,640 - room hotel, casino and shopping promenade on the Las Vegas Strip in Paradise, Nevada. It is owned and operated by Caesars Entertainment Corporation. As of 2012, the casino is 32,890 sq ft (3,056 m) with 830 slot machines, 55 table games, and a race and sports book.
Document 10: Gold Spike (property): Gold Spike (formerly Gold Spike Hotel & Casino) is a bar, lounge, residential building, and former boutique 112 - room, seven floor hotel. It is connected with the Oasis at the Gold Spike, a 50 - room three floor hotel located in downtown Las Vegas. It was owned by entrepreneur Tony Hsieh and his Downtown Project, having bought it from The Siegel Group; and the casino was operated by Golden Gaming.
Document 11: Harvard University: The Harvard Crimson competes in 42 intercollegiate sports in the NCAA Division I Ivy League. Harvard has an intense athletic rivalry with Yale University culminating in The Game, although the Harvard–Yale Regatta predates the football game. This rivalry, though, is put aside every two years when the Harvard and Yale Track and Field teams come together to compete against a combined Oxford University and Cambridge University team, a competition that is the oldest continuous international amateur competition in the world.
Document 12: World Series of Poker: The idea of a World Series of Poker began in 1969 with an event called the Texas Gambling Reunion. It was an invitational event sponsored by Tom Moore of San Antonio, Texas, and held at the Holiday Hotel and Casino in Reno. This inaugural event was won by Crandell Addington. The set of tournaments that the World Series of Poker (WSOP) would evolve into was the brainchild of Las Vegas casino owner and poker player Benny Binion. In 1970, the first WSOP at Binion's Horseshoe took place as a series of cash games that included five - card stud, deuce to seven low - ball draw, razz, seven - card stud, and Texas hold 'em. The format for the Main Event as a freeze - out Texas hold' em game came the next year. The winner in 1970, Johnny Moss, was elected by his peers as the first ``World Champion of Poker ''and received a silver cup as a prize.
Document 13: Nugget Casino Resort: Nugget Casino Resort (formerly Dick Graves' Nugget and John Ascuaga's Nugget) is a hotel and casino located in Sparks, Nevada. It is owned and operated by Marnell Gaming. The main portion of the casino consists of two 29-story towers nestled between Interstate 80 and the Union Pacific rail yard. There are additional attached buildings underneath and across I-80 from the towers. It is located in Downtown Sparks at the Victorian Square.
Document 14: Golden Nugget Las Vegas: The Golden Nugget was originally built in 1946, making it one of the oldest casinos in the city. Jackie Gaughan at one time owned a stake in the hotel as part of his many downtown properties. Steve Wynn bought a stake in the Nugget, which he increased so that, in 1973, he became the majority shareholder, and the youngest casino owner in Las Vegas. In 1977 he opened the first hotel tower and the resort earned its first four diamond rating from Mobil Travel Guide. It was the foundation for Wynn's rise to prominence in the casino industry. The second hotel tower opened in 1984 along with the showroom, and the third tower was opened in 1989. In 2000, the Golden Nugget (and all of Mirage Resorts' other properties) was sold to MGM Grand, Inc. (later named MGM Mirage).
Document 15: Admerasia: Admerasia was founded in 1993 by Zan Ng, a commercial photographer. He began the company with a personal investment of $250,000 that he and his brothers had saved up. In 1994, advertising executive Joseph Liu joined the company as a partner. Liu previously owned his own advertising company but joined Admerasia as he no longer wanted to deal with the risks associated with entrepreneurship. Both Ng and Liu came to the United States in 1975 in hopes of finding work as artists, Ng without any possessions and Liu with only a rice cooker.
ground_truth: 7,200
sub_queries: where does the world series of poker take place Answer: Las Vegas
who owns the gold spike in Las Vegas Answer: Tony Hsieh
Tony Hsieh >> educated at Answer: Harvard
What is the enrollment of undergraduates at Harvard ? Answer: 7,200