Question: What sport was played in the 2011 Sevens at the city with the most high-rise buildings in the world?

full_context: Document 1: 2011 Hong Kong Sevens: The 2011 Hong Kong Sevens was a seven-a-side rugby union tournament, part of the 2010–11 IRB Sevens World Series. The competition was being held from 25–27 March in at Hong Kong Stadium in Hong Kong and featured 24 teams.
Document 2: Woolworth Building: The Woolworth Building is an early American skyscraper located at 233 Broadway in Manhattan, New York City. Designed by architect Cass Gilbert, it was the tallest building in the world from 1913 to 1930, with a height of . More than a century after its construction, it remains one of the 100 tallest buildings in the United States as well as one of the 30 tallest buildings in New York City.
Document 3: Bermuda: Bermuda has developed a proud Rugby Union community. The Bermuda Rugby Union team won the 2011 Caribbean championships, defeating Guyana in the final. They previously beat The Bahamas and Mexico to take the crown. Rugby 7's is also played, with four rounds scheduled to take place in the 2011–2012 season. The Bermuda 7's team competed in the 2011 Las Vegas 7's, defeating the Mexican team. There are four clubs on the island: (1) Police (2) Mariners (3) Teachers (4) Renegades. There is a men's and women's competition–current league champions are Police (Men) (winning the title for the first time since the 1990s) and Renegades (women's). Games are currently played at Warwick Academy. Bermuda u/19 team won the 2010 Caribbean Championships.
Document 4: 2017 British and Irish Lions tour to New Zealand: The British and Irish Lions toured New Zealand during June and July 2017. The British and Irish Lions played 10 rugby union matches: matches against all five New Zealand Super Rugby franchises, the NZ Provincial Barbarians, the Māori All Blacks and three test matches against New Zealand.
Document 5: New York City: Manhattan's skyline, with its many skyscrapers, is universally recognized, and the city has been home to several of the tallest buildings in the world. As of 2011, New York City had 5,937 high-rise buildings, of which 550 completed structures were at least 330 feet (100 m) high, both second in the world after Hong Kong, with over 50 completed skyscrapers taller than 656 feet (200 m). These include the Woolworth Building (1913), an early gothic revival skyscraper built with massively scaled gothic detailing.
Document 6: 2017 Women's Rugby World Cup: The 2017 Women's Rugby World Cup was the eighth edition of the Women's Rugby World Cup and was held in Ireland in August 2017, with New Zealand becoming champions by beating England 41 - 32 in the final, held on 26 August. Matches were held in Dublin and Belfast. The pool stages were held at University College Dublin with the semi finals and finals held at Queen's University and Kingspan Stadium in Belfast.
Document 7: New York City: New York has architecturally noteworthy buildings in a wide range of styles and from distinct time periods, from the saltbox style Pieter Claesen Wyckoff House in Brooklyn, the oldest section of which dates to 1656, to the modern One World Trade Center, the skyscraper at Ground Zero in Lower Manhattan and currently the most expensive new office tower in the world.
Document 8: Empire State Building: The Empire State Building is a 102 - story skyscraper on Fifth Avenue between West 33rd and 34th Streets in Midtown, Manhattan, New York City. It has a roof height of 1,250 feet (381 m), and with its antenna included, it stands a total of 1,454 feet (443.2 m) tall. Its name is derived from the nickname for New York, the Empire State.
Document 9: Houston: Centered on Post Oak Boulevard and Westheimer Road, the Uptown District boomed during the 1970s and early 1980s when a collection of mid-rise office buildings, hotels, and retail developments appeared along Interstate 610 west. Uptown became one of the most prominent instances of an edge city. The tallest building in Uptown is the 64-floor, 901-foot (275 m)-tall, Philip Johnson and John Burgee designed landmark Williams Tower (known as the Transco Tower until 1999). At the time of construction, it was believed to be the world's tallest skyscraper outside of a central business district. The new 20-story Skanska building and BBVA Compass Plaza are the newest office buildings built in Uptown after 30 years. The Uptown District is also home to buildings designed by noted architects I. M. Pei, César Pelli, and Philip Johnson. In the late 1990s and early 2000s decade, there was a mini-boom of mid-rise and high-rise residential tower construction, with several over 30 stories tall. Since 2000 more than 30 high-rise buildings have gone up in Houston; all told, 72 high-rises tower over the city, which adds up to about 8,300 units. In 2002, Uptown had more than 23 million square feet (2,100,000 m²) of office space with 16 million square feet (1,500,000 m²) of Class A office space.
Document 10: Rugby sevens at the 1998 Asian Games – Men: The 1998 Men's Asian Games Rugby sevens Tournament was held in Thai Army Sports Stadium from December 7, 1998 to December 8, 1998.
Document 11: Empire State Building: The Empire State Building stood as the world's tallest building for nearly 40 years, from its completion in early 1931 until the topping out of the original World Trade Center's North Tower in late 1970. Following the September 11 attacks in 2001, the Empire State Building was again the tallest building in New York, until One World Trade Center reached a greater height in April 2012. The Empire State Building is currently the fifth - tallest completed skyscraper in the United States and the 35th - tallest in the world. It is also the fifth - tallest freestanding structure in the Americas. When measured by pinnacle height, it is the fourth - tallest building in the United States.
Document 12: Rugby sevens at the 2018 Commonwealth Games – Men's tournament: 2018 Men's Commonwealth Rugby Sevens Tournament View of the Robina Stadium, where the Rugby Sevens tournament took place. Tournament details Host nation Australia Venue Robina Stadium Date 13 -- 15 April 2018 No. of nations 16 Final positions Champions New Zealand Runner - up Fiji Third place England Fourth place South Africa Tournament statistics Matches played 32 2022 →
Document 13: 2016–17 World Rugby Sevens Series: The 2016 -- 17 World Rugby Sevens Series, known for sponsorship reasons as the HSBC World Rugby Sevens Series, was the 18th annual series of rugby sevens tournaments for national rugby sevens teams. The Sevens Series has been run by World Rugby since 1999 -- 2000. South Africa won the Series with a comfortable 28 - point margin over England; South Africa won five of the ten tournaments.
Document 14: 2019 Rugby World Cup: The 2019 Rugby World Cup will be the ninth Rugby World Cup, to be held in Japan from September 20 to November 2. This will be the first time the tournament is to be held in Asia, the first time consecutive tournaments have been staged in the same hemisphere, and also the first time that the event will take place outside the traditional heartland of the sport.
Document 15: New York City: Many districts and landmarks in New York City have become well known, and the city received a record 56 million tourists in 2014, hosting three of the world's ten most visited tourist attractions in 2013. Several sources have ranked New York the most photographed city in the world. Times Square, iconic as the world's "heart" and its "Crossroads", is the brightly illuminated hub of the Broadway Theater District, one of the world's busiest pedestrian intersections, and a major center of the world's entertainment industry. The names of many of the city's bridges, skyscrapers, and parks are known around the world. Anchored by Wall Street in the Financial District of Lower Manhattan, New York City has been called both the most economically powerful city and the leading financial center of the world, and the city is home to the world's two largest stock exchanges by total market capitalization, the New York Stock Exchange and NASDAQ. Manhattan's real estate market is among the most expensive in the world. Manhattan's Chinatown incorporates the highest concentration of Chinese people in the Western Hemisphere, with multiple signature Chinatowns developing across the city. Providing continuous 24/7 service, the New York City Subway is one of the most extensive metro systems worldwide, with 469 stations in operation. New York City's higher education network comprises over 120 colleges and universities, including Columbia University, New York University, and Rockefeller University, which have been ranked among the top 35 in the world.
ground_truth: seven-a-side
sub_queries: What city has the most high-rise buildings in the world? Answer: Hong Kong
2011 Hong Kong Sevens >> sport Answer: seven-a-side