Question: Which casino located southeast of mainland china is billed as the largest casino in the world?

Context paragraphs:
Montreal Casino: The Montreal Casino (French: "Casino de Montréal" ) is a casino located on the Notre Dame Island in the borough of Ville-Marie in Montreal, Quebec, and is the largest casino in Canada.  The casino is open twenty-four hours a day, seven days a week to patrons aged 18 and older.  It opened on October 9, 1993.

Lo Wu: Lo Wu or Lowu is an area in North District, New Territories, Hong Kong.  It lies on the border between Hong Kong and mainland China, specifically the Luohu District of Shenzhen in mainland China.  The area is most notable as the location of the most heavily used immigration control point for passengers travelling to and from mainland China.  It is where the Lo Wu Station is located.

Bamboo network: The "Bamboo network" or the "Chinese Commonwealth" is a term used to conceptualize connections between businesses operated by the Overseas Chinese community in Southeast Asia.  It links the Overseas Chinese business community of Southeast Asia, namely Myanmar, Malaysia, Indonesia, Thailand, Vietnam, the Philippines, and Singapore with the economies of Greater China (Mainland China, Hong Kong, Macau, and Taiwan).  Ethnic Chinese play an important economic role in Southeast Asia, since they dominate commerce and the business sector and form the economic elite across all the major Southeast Asian countries.  Overseas Chinese have dominated much of the economy in Thailand, Malaysia, the Philippines, Cambodia and Indonesia since the 19th century and today exert a powerful economic influence throughout the region.  Since the turn of the 21st century, postcolonial Southeast Asia has now become an important pillar of the international Overseas Chinese economy as the bamboo network represents an important symbol manifesting itself as an extended international economic outpost of Mainland China.  Overseas Chinese wield tremendous economic clout over their indigenous Southeast Asian majority counterparts and play a critical role in maintaining the regions aggregate economic vitality and prosperity.

Beijing National Day School: Beijing National Day School（BNDS）, or Beijing October First School（BOFS） (Chinese: 北京十一学校 or 北京市十一学校) is a junior high and high school in established in 1952.  Beijing National Day School is one of the most prestigious high schools in China. It is located in Yuquanlu, Haidian District, Beijing, China.  The school was affiliated with the People's Liberation Army of the People's Republic of China as the unique school for PLA's High-Level Officers' children.  It opened to recruit students from 1964 and became a general high school of Beijing, and no longer belongs to the PLA.  In recent years, there are about sixty graduates every year admitted to Peking University and Tsinghua University, which are two of the most prestigious colleges in mainland China.  This number accounts for one-fifth of graduates each year.  The overall college admission result ranks in the second place in Haidian School District, only behind The High School Affiliated to Renmin University of China(RDF), which is the best High School in mainland China.  On the other hand, one-third graduate chooses to pursue their college degree abroad, learning cutting-edge theories from the western world.  In a 2016 ranking of Chinese high schools that send students to study in American universities, Beijing National Day School ranked number 4 in mainland China in terms of the number of students entering top-tier American universities.  Beijing National Day School has cultivated many successful alumni in the past decades.  There are many alumni of BNDS working at financial service industry in both mainland China and overseas, People's Liberation Army (PLA), Central Government of People's Republic of China and monopolistic State-Owned Corporations.  Successful alumni include CEOs of monopolistic State-Owned Corporations and High-Level Officers of People's Liberation Army(PLA).

Casinò di Campione: The Casinò di Campione is the largest employer in the municipality of Campione d'Italia, an Italian exclave within Switzerland's Canton of Ticino, on the shores of Lake Lugano.  The casino was founded in 1917 as a site to gather information from foreign diplomats during the First World War.  Today it is owned by the Italian government, and operated by the municipality.  The income from the casino is sufficient for the operation of Campione without the imposition of taxes, or obtaining of other revenue.  It is Europe’s largest casino.

Harrah's Council Bluffs: Harrah’s Council Bluffs is a hotel and casino located in Council Bluffs, Iowa across the Missouri River from Omaha, Nebraska.  It is owned and operated by Caesars Entertainment Corporation.  Harrah’s Council Bluffs is the largest casino in the Omaha–Council Bluffs metropolitan area.  It has many amenities including a golf course, a gift shop, a 251-room hotel, 3 restaurants and 2 bars.

Riverwind Casino: Riverwind Casino is a casino located in Norman, Oklahoma that opened in 2006.  The 219000 sqft casino, owned and operated by the Chickasaw Nation is one of the largest in the state.  In addition to the casino floor, the facility also has two restaurants, a lounge, a food court, several bars, valet parking and a 1500-seat theatre that hosts concerts.  Riverwind also opened a 100-room adjoining hotel in February 2009.  The casino is located in at the Interstate 35/State Highway 9 west junction.

Tourism in Macau: Macau is a special administrative district (SAR) located to the southeast of mainland China.  Since Macau is using the “one country two systems” principle just like Hong Kong, acting as a special region of China, therefore it gained many benefits from the principle.  The population in Macau is approximately 582,000.  Tourism is a major industry in Macau.  It is famous for the blend of Portuguese and Chinese cultures and its gambling industry, which includes Casino Lisboa, Macau, Sands Macau, The Venetian Macao, and Wynn Macau.  There are many choices of hotels and resorts since it is one of the world class tourism industry in Asia.

WinStar World Casino: WinStar World Casino and Resort is a hotel and casino located near the Oklahoma–Texas state line, 1 mi north of the Red River, at Exit 1 off Interstate 35 and Winstar Boulevard in Thackerville, Oklahoma.  The casino opened as the WinStar Casino in 2004, and was expanded (with a 395-room hotel tower) and renamed the WinStar World Casino in 2009, with its 519000 sqft of casino floor making it the largest casino in the state of Oklahoma.  In August 2013, WinStar Resorts completed a major expansion project, which added a new 1000-room second hotel tower that was divided into two phases; this also added a new casino that is attached to the tower.  As a result of the completion of this expansion, the casino overtook Foxwoods Resort Casino to become the largest casino in the United States based on gaming floor space.  WinStar has over 7,400 electronic games, 46 table poker rooms, 99 total table games, Racer's off-track betting, High Limit Room, keno, and bingo.

The Venetian Macao: The Venetian Macao () is a luxury hotel and casino resort in Macau owned by the American Las Vegas Sands company.  The Venetian is a 39-story, casino hotel on the Cotai Strip in Macau.  The 10500000 sqft Venetian Macao is modeled on its sister casino resort The Venetian Las Vegas, and is the seventh-largest building in the world by floor area.  The Venetian Macao is also the largest casino in the world, and the largest single structure hotel building in Asia.

Supporting paragraphs: Tourism in Macau The Venetian Macao
Answer: The Venetian Macao