Question: Who lives in Las Vegas and had a greyhound racetrack that closed in Wichita in2007?

Context paragraphs:
Phil Ruffin: Phillip Gene "Phil" Ruffin (born March 14, 1935) is an American businessman.  His business interests lie largely in casinos, greyhound racing tracks, oil production, convenience stores, and real estate.  Ruffin lives in Las Vegas, Nevada.  On the "Forbes" 2017 list of the world's billionaires, he was ranked #814 with a net worth of US$2.6 billion.

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.

Tropicana – Las Vegas Boulevard intersection: The Tropicana – Las Vegas Boulevard intersection on the Las Vegas Strip (Tropicana Avenue and Las Vegas Boulevard), is noteworthy for several reasons.  It was the first intersection in Las Vegas completely closed to street level pedestrian traffic and its four corners are home to four major resorts: Excalibur Hotel and Casino, Tropicana Las Vegas, New York-New York Hotel and Casino and MGM Grand Las Vegas—the latter has 5,044 rooms and was once the largest hotel in the world.  The resorts at the four corners have a total of 12,536 hotel rooms as of 2016.

Robertson High School: Robertson High School (RHS) is a public senior high school in Las Vegas, New Mexico.  The school is part of the Las Vegas City Schools District in former East Las Vegas.  The building dates from about 1945, when it was known as Las Vegas High School.  The school was renamed Las Vegas Robertson High School in 1958, after the old Las Vegas High School burned down and a new building was constructed.  W. J. Robertson had been the Superintendent of the Las Vegas City Schools since 1941 when he suffered a fatal heart attack on November 26, 1956 at the age of 55.  Mr. Robertson, born in Kansas on November 3, 1901 also served as Principal at Las Vegas High School for many years prior.  The colors of RHS are red and white, their mascot is the Cardinal.  The enrollment currently stands at 607.

Two Dozen and One Greyhounds: "Two Dozen and One Greyhounds" is the 20th episode of "The Simpsons"' sixth season.  It originally aired on the Fox network in the United States on April 9, 1995.  The episode was written by Mike Scully and directed by Bob Anderson.  Frank Welker guest stars as Santa's Little Helper and various other dogs.  In the episode, Santa's Little Helper has puppies with a dog that he met at the greyhound racetrack.

Hinsdale Greyhound Park: Hinsdale Greyhound Park was a greyhound racing track in Hinsdale, New Hampshire, United States.  It closed in 2008.  It was originally Hinsdale Raceway, a horse racing track that began operation in 1958.  During its heyday it drew thousands of spectators from all over New England and even Montreal.  Harness racing prospered at Hinsdale throughout the 1960s, '70s and early '80s, until track management, in an attempt to reduce costs, converted the facility to year-round greyhound racing.  This was popular too for several years, but competition from casinos in neighboring states slowly eroded the fan base, and the last several years of operation were a financial struggle.  In late 2008 the track finally succumbed and ceased operations under a mountain of debt.  The racetrack was demolished a few years later.

Southland Park Gaming and Racing: Southland Park Gaming and Racing is a casino and greyhound racetrack in West Memphis, Arkansas.  Over 400 greyhound races take place at the Park each year.  Simulcast thoroughbred and greyhound races from other tracks around the United States are also offered.  After years of low attendance, Southland Park has regained popularity because neighboring casinos in Tunica, Mississippi experienced devastating floods 2011.  In 2014, it was announced that Southland was to undergo a nearly $38 million dollar expansion and renovation.  It is one of the most visited attractions in Arkansas and the City of West Memphis.

Wild West World: Wild West World was a Wild West theme park in Park City, Kansas that opened on May 5, 2007 and closed on July 9, 2007.  It was located on 130 acre along Interstate 135 near Phil Ruffin's Wichita Greyhound Park, which closed the same year.

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.

Supporting paragraphs: Wild West World Phil Ruffin
Answer: Phil Ruffin