The 5-Hour Energy Knoxville Nationals is an annual sprint car event held at Knoxville Raceway in Knoxville, Iowa.
 An Associated Press writer called winning the event "sprint car racing’s premiere title".
 It is nicknamed "The Granddaddy of Them All."
 The event is the biggest and most prestigious race of the year in sprint car racing.
 The Saturday finale is held on the second Saturday in August.
 The event is held for four days (Wednesday-Saturday) and is attended annually by approximately 25,000 fans.
 The event has the highest paying purse in sprint car racing at $1,000,000 which attracts roughly 100 race teams to compete.
The 2011 FIA GT1 Abu Dhabi round was an auto racing event held at the Yas Marina Circuit in Abu Dhabi, United Arab Emirates.
 Taking place over 25–26 March 2011, Abu Dhabi was the opening round of the 2011 FIA GT1 World Championship season.
 It is the second consecutive year that FIA GT1 has opened its season in Abu Dhabi, although the 2011 event will be held on a shorter 4.730 km layout of the Yas Marina Circuit.
 Marc Hennerici is the only returning driver who won during the event last season, while Corvette and Ford both are defending victors.
 The event is also unique on the FIA GT1 calendar as it is the only one held over a two-day period rather than the normal three; Qualifying is held following Practice on Friday while the Qualifying Race and Championship race are both held on Saturday.
 The weekend is shared with a trio of local racing series: The UAE Sportscar series, the Cytech UAE GT series, and the Total UAE Touring Cars series.
The Bathurst Motor Festival is an annual motor racing event held at the Mount Panorama Circuit in Bathurst, New South Wales, Australia during the Easter long weekend.
 The event was first held in 2011 as a replacement for the Festival of Sporting Cars and as a way to give a higher number of drivers the opportunity to drive on the circuit.
 The event plays host to a variety of racing categories, including production cars, sports cars, open-wheel racing cars and historic cars, which take part in sprint races, endurance races and regularity sessions.
 Around 300 vehicles are entered for the event each year, with crowds of up to and over 10,000 people attending the event.
 Car clubs also attend the event, displaying their cars within the confines of the circuit and performing parade laps.
 Since 2016, the Bathurst 6 Hour production car race has been the showpiece race of the event.
West End is an annual event held in London between top West End shows, loosely based on the Eurovision Song Contest.
 It is generally held at the Piccadilly theatre and the host show does not compete but rather is the opening act before the main event.
 This event is done for the charity theatremad and the format is divided between three competitions, one for the best performance, one for best creativity and another for the best video ident.
The 2006 North American Under 21 World Qualifier, a speedway event held each year to qualify for a spot in the qualifying round of the Individual Speedway Junior World Championship, was held on December 16, 2006 at the City of Industry in California.
 The event was won by Neil Facchini who thus became US Under-21 National Champion, but he was too old to compete in the world championship of 2007, so it was the second placed rider Dale Facchini who entered for that event.
UFC 127: Penn vs. Fitch was a mixed martial arts event held by the Ultimate Fighting Championship on Sunday, 27 February 2011 at Acer Arena in Sydney, Australia.
 Due to the time zone difference it aired live on Saturday, 26 February in North America.
 This was the second UFC event held in Sydney, following the sold-out UFC 110 in 2010.
WrestleMania XXVII was the twenty-seventh annual WrestleMania professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE), held on April 3, 2011 at the Georgia Dome in Atlanta, Georgia.
 The event was the first WrestleMania in the state of Georgia and the second to be held in Southeastern United States, following WrestleMania XXIV.
Nicole Elizabeth "Snooki" LaValle (née Polizzi; born November 23, 1987) is an American reality television personality, author, dancer and professional wrestler who is best known for being a cast member of the MTV reality show "Jersey Shore" and starring in "Snooki & Jwoww".
 Since the show's debut in 2009, Polizzi has gained popularity by appearing on talk shows including "The View", "The Ellen DeGeneres Show", "Jimmy Kimmel Live!
", "Late Show with David Letterman", and "The Wendy Williams Show".
 She earned $150,000 per "Jersey Shore" episode for the last two seasons.
 She also appeared as the guest hostess for "WWE Raw" in 2011 and competed at WrestleMania XXVII that same year.
The New York Encounter is an annual three-day event held in New York City in January, on Martin Luther King's weekend.
 It is a cultural event organized by members of the Catholic movement Communion and Liberation; it is composed of conferences, exhibitions, and artistic performances.
 The first edition was held in January 2011.
 The event follows the consolidated experience gained in Italy from the annual week-long event held in Rimini (Italy), called the Meeting for friendship among peoples, which has become a major event in Italy and attracts intellectuals, scientists, politicians, and religious figures of very high-profile from all over the world.
 The NYE is free and is organized with the help of volunteers and many young adults from all over the United States.
The history of PAX (originally known as Penny Arcade Expo) began in 2004, with the first event held in Bellevue, Washington, and held annually in Seattle since then.
 In 2010, a new event was also held in Boston, Massachusetts at which point the two events were differentiated with the names PAX West (on the West Coast; previously "PAX Prime") and PAX East (on the East Coast).
 In 2011, an event was held in Seattle, Washington, and dubbed Pax Dev.
 In 2013, an event was held in Melbourne, Australia, and dubbed PAX Australia.
 In 2015, an event was held in San Antonio, Texas, and dubbed PAX South.

Question: What event held on April 3, 2011 did Snooki compete in?
Answer: WrestleMania XXVII