Given the question: Information:  - The 1928 Summer Olympics (Dutch: "Olympische Zomerspelen 1928"), officially known as the Games of the IX Olympiad, was an international multi-sport event which was celebrated in 1928 in Amsterdam, Netherlands. Amsterdam had bid for the 1920 and 1924 Olympic Games, but had to give way to wartorn Antwerp, Belgium, and Pierre de Coubertin's Paris, respectively. The only other candidate city for the 1928 Games was Los Angeles, which would host the Olympics four years later.  - Jan Hemánek (May 28, 1907  May 13, 1978) was a Czechoslovak/Czech boxer who competed in the 1928 Summer Olympics.  - Piero Toscani ( 28 July 1904 in Milan -- 23 May 1940 ) was an Italian boxer who won the gold medal in the middleweight class at the 1928 Olympics , after defeating Jan Hemánek in the final .    After reading the paragraphs above, we are interested in knowing the entity with which 'piero toscani' exhibits the relationship of 'participant of'. Find the answer from the choices below.  Choices: - 1928 summer olympics  - olympic games
The answer is:
1928 summer olympics