Given the question: Information:  - Sergio `` Sergi '' Llull Melià ( ser - HIO YU - y ; born November 15 , 1987 ) is a Spanish professional basketball player for Real Madrid of the Liga ACB . He is a 6 ft 3  in ( 1.92 m ) tall point guard - shooting guard .  - Association football, more commonly known as football or soccer, is a team sport played between two teams of eleven players with a spherical ball. It is played by 250 million players in over 200 countries and dependencies, making it the world's most popular sport. The game is played on a rectangular field with a goal at each end. The object of the game is to score by getting the ball into the opposing goal.  - The point guard (PG), also called the one or point, is one of the five positions in a regulation basketball game. A point guard has perhaps the most specialized role of any position. They are expected to run the team's offense by controlling the ball and making sure that it gets to the right players at the right time. Above all, the point guard must totally understand and accept their coach's game plan; in this way, the position can be compared to a quarterback in American football or a playmaker in association football (soccer).  - The Liga ACB, known as Liga Endesa for sponsorship reasons, is the first tier level professional men's basketball league in Spain. It began in 1957, with the name of Liga Nacional, and was originally organized by the Spanish Basketball Federation. The league changed to its current form, beginning with the 198384 season, after the Asociación de Clubs de Baloncesto (ACB) took control over the league. The league is rated as one of the top three European national domestic/regional leagues in the European national basketball league rankings system.  - American football, referred to as football in the United States and Canada, and also known as gridiron, is a sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with control of the oval-shaped football, attempts to advance down the field by running with or passing the ball, while the team without control of the ball, the defense, aims to stop their advance and take control of the ball for themselves. The offense must advance at least ten yards in four downs, or plays, or else they turn over the football to the opposing team; if they succeed, they are given a new set of four downs. Points are primarily scored by advancing the ball into the opposing team's end zone for a touchdown or kicking the ball through the opponent's goalposts for a field goal. The team with the most points at the end of a game wins.  - Andre Tyler Iguodala (born January 28, 1984) is an American professional basketball player for the Golden State Warriors of the National Basketball Association (NBA). The swingman was an NBA All-Star in 2012 and has been named to the NBA All-Defensive Team twice. Iguodala won an NBA championship with the Warriors in 2015, when he was named the NBA Finals Most Valuable Player. He was also a member of the United States national team at the 2010 FIBA World Championship and 2012 Summer Olympics, winning the gold medal both times.  - The shooting guard (SG), also known as the two or off guard, is one of the five positions in a regulation basketball game. A shooting guard's main objective is to score points for his team. Some teams ask their shooting guards to bring up the ball as well; these players are known colloquially as combo guards. Kobe Bryant, for example, as a shooting guard was as good a playmaker as he was a scorer; other examples of combo guards are Dwyane Wade, Allen Iverson, James Harden, Jamal Crawford, Randy Foye and Jason Terry. A player who can switch between playing shooting guard and small forward is known as a swingman. Notable swing men (also known as wing players) include Jimmy Butler, Tracy McGrady, Vince Carter, Joe Johnson, Andre Iguodala, Andrew Wiggins, Evan Turner and Tyreke Evans. In the NBA, shooting guards usually range from 6' 4" (1.93 m) to 6' 7" (2.01 m).  - Basketball is a sport that is played by two teams of five players on a rectangular court. The objective is to shoot a ball through a hoop in diameter and mounted at a height of to backboards at each end of the court. The game was invented in 1891 by Dr. James Naismith, who would be the first basketball coach of the Kansas Jayhawks, one of the most successful programs in the game's history.   - James Naismith (November 6, 1861  November 28, 1939) was a Canadian-American physical educator, physician, chaplain, sports coach and innovator. He invented the game of basketball at age 30 in 1891. He wrote the original basketball rule book and founded the University of Kansas basketball program. Naismith lived to see basketball adopted as an Olympic demonstration sport in 1904 and as an official event at the 1936 Summer Olympics in Berlin, as well as the birth of the National Invitation Tournament (1938) and the NCAA Tournament (1939).     After reading the paragraphs above, we are interested in knowing the entity with which 'sergio llull' exhibits the relationship of 'participant of'. Find the answer from the choices below.  Choices: - 2012 summer olympics  - sport
The answer is:
2012 summer olympics