Question: The center that the Judo competition at the 1996 Summer Olympics took place in was opened in what year?

Context paragraphs:
Georgia World Congress Center: The Georgia World Congress Center (GWCC) is a convention center in Atlanta, Georgia, USA.  Enclosing some 3.9 million ft (360,000 m) in exhibition space and hosting more than a million visitors each year, the GWCC is the third-largest convention center in the United States.  Opened in 1976, the GWCC was the first state-owned convention center established in the United States.  The center is operated on behalf of the state by the Georgia World Congress Center Authority, which was chartered in 1971 by Georgia General Assembly to develop an international trade and exhibition center in Atlanta.  The authority later developed the Georgia Dome, Centennial Olympic Park, and Mercedes-Benz Stadium, which replaced the Georgia Dome.  The Georgia Dome was closed on March 5, 2017 and is scheduled for implosion on November 20, 2017 while Mercedes-Benz Stadium officially opened on August 26, 2017.  While the GWCCA owns Mercedes-Benz Stadium, AMB Group, the parent organization for the National Football League's Atlanta Falcons and Major League Soccer's Atlanta United FC, is responsible for the stadium's operations.

Judo at the 2010 Summer Youth Olympics: The Judo competition at the 2010 Summer Youth Olympics took place between 21–25 August in Singapore.  There were a total of eight weight categories for both Boys and Girls.

Judo at the 1988 Summer Olympics: The Judo competition at the 1988 Summer Olympics continued the seven weight classes first used at the 1980 Games.  The open division was eliminated from the competition.  Women's judo made its first appearance at the Olympic Games, as a demonstration sport.  Japan failed to claim the top of the medal count for the first time in an Olympics in which they participated, coming in third behind South Korea and Poland.

World Judo Championships: The World Judo Championships are the highest level of international judo competition, along with the Olympic judo competition.  The championships are held once every year (except the years when the Olympics take place) by the International Judo Federation, and qualified judoka compete in their respective categories as representatives of their home countries.  Team competitions have also been held since 1994.  The men's championships began in 1956, though the format and periodicity of the championships have changed over time.  The last edition of the championships took place in Budapest, Hungary in 2017.

Nauru at the 2012 Summer Olympics: Nauru competed at the 2012 Summer Olympics in London, which was held from 27 July to 12 August 2012.  The country's participation at London marked its fifth appearance in the Summer Olympics since its debut at the 1996 Summer Olympics.  The delegation consisted of two participants: Sled Dowabobo in the men's (73 kilogram) lightweight judo contest and Itte Detenamo in the men's (105 kilogram) super-heavyweight weightlifting competition.  Dowabobo qualified as one of Oceania's highest ranked judo competitors while Detenamo made the Games based on his qualifying performance.  Detenamo was the flag bearer for both the opening and closing ceremonies.  Dowabobo was eliminated by his opponent Navruz Jurakobilov in the round of 64 and Detemano finished 14th in his event.

Judo at the 1996 Summer Olympics: This page shows the final results of the "Judo Competition" at the "1996 Summer Olympics" in Atlanta.

Judo at the 1996 Summer Olympics – Men's 71 kg: These are the results of the men's 71 kg (also known as "lightweight") competition in judo at the 1996 Summer Olympics in Atlanta, Georgia.  A total of 35 men competed in this event, limited to jūdōka whose body weight was less than, or equal to, 71 kilograms.  Competition took place in the Georgia World Congress Center.

Belize at the 2012 Summer Olympics: Belize competed at the 2012 Summer Olympics in London, which were held from 27 July to 12 August 2012.  The country's participation in London was its eleventh appearance in the Summer Olympics since its debut at the 1968 Summer Olympics.  The delegation included two short-distance runners and one judoka: Kenneth Medwood, Kaina Martinez and Eddermys Sanchez.  Medwood qualified by recording a time that met qualification standards while the latter two entered through wildcard places.  Medwood was selected as the flag bearer for both the opening and closing ceremonies.  Medwood reached the semifinals of the men's 400 metres hurdles before he was eliminated from competition while Martinez did not progress farther than the quarterfinal stage of the women's 100 metres.  Sanchez was defeated by his opponent Miklós Ungvári of Hungary in a 19-second match in the Round of 32 of the men's half-lightweight judo competition.

Judo at the 1972 Summer Olympics: The Judo competition at the 1972 Summer Olympics was the return of the sport following its absence at the 1968 Summer Olympics in Mexico City.  Medals were awarded in six weight classes, and competition was restricted to men only.  Among the highlights was Willem Ruska of the Netherlands winning gold medals in both the heavyweight and open class competition, becoming the first judoka to win two olympic gold medals.

Judo at the 1984 Summer Olympics: The Judo competition at the 1984 Summer Olympics continued the seven weight classes first used at the 1980 Games.  With the open division, there were eight competitions, which were restricted to male judoka.  Japan returned to the top of the medal count, after boycotting the Moscow games.  Because of the Soviet led counter-boycott of the Los Angeles games, several traditionally strong judo countries, including Cuba and the Soviet Union, did not participate.  The Judo competition was held at California State University, Los Angeles.

Supporting paragraphs: Judo at the 1996 Summer Olympics – Men's 71 kg Georgia World Congress Center
Answer: 1976