paragraph_text: Léopold Standaert was a sailor from Belgium, who represented his native country at the 1920 Summer Olympics in Ostend, Belgium in the 8 Metre.

paragraph_text: Herman Carel Felix Clotilde von Heijden (11 April 1890 in Weerselo – 17 November 1982 in Boxtel) was a football (soccer) player from the Netherlands, who represented his home country at the 1920 Summer Olympics. There he won the bronze medal with the Netherlands national football team. He was also present at the 1912 Summer Olympics although he did not play and therefore received no medal. Later he became mayor of Rosmalen, North Brabant (1923–1955).

paragraph_text: Harry Holm (September 14, 1902 – December 25, 1987) was a Danish gymnast who competed in the 1920 Summer Olympics. He was part of the Danish team, which was able to win the gold medal in the gymnastics men's team, free system event in 1920.

paragraph_text: Cabo Ruivo is a station on the Red Line of the Lisbon Metro. The station is located on Av. Padua, near the intersection with Av. Infante Dom Henrique serving the Cabo Ruivo area of the city.

paragraph_text: Henri Smets (Wezembeek-Oppem, 1895 - Brussel, 1994) was a Belgian cross country athlete. He was a participant of the 1920 Olympic Games in Antwerp.

paragraph_text: The men's 400 metre freestyle was a swimming event held as part of the swimming at the 1920 Summer Olympics programme. It was the third appearance of the event.

paragraph_text: Pyeongchang was elected as the host city in July 2011, during the 123rd IOC Session in Durban, South Africa. This was the first time that South Korea had hosted the Winter Olympics and the second Olympics held in the country overall, after the 1988 Summer Olympics in Seoul. It was the third time that an East Asian country had hosted the Winter Games, after Sapporo (1972) and Nagano (1998), both in Japan. It was also the first of three consecutive Olympics to be held in East Asia, the other two being the 2020 Summer Olympics in Tokyo and the 2022 Winter Olympics in Beijing.

paragraph_text: Paul Nicolas (4 November 1899 – 3 March 1959) was a French international footballer. He was part of France national football team squad at the 1920, 1924 and 1928 Summer Olympics.

paragraph_text: The individual fixed large bird event was part of the archery programme at the 1920 Summer Olympics. The event, like all other archery events in 1920, was open only to men. 6 archers, all from Belgium, competed.

paragraph_text: The Lisbon Metro () is the rapid transit system of Lisbon, Portugal. Opened in December 1959, it was the first subway system in Portugal.

paragraph_text: Paulo Álvaro Tarrto (born April 12, 1914) is a former Olympic freestyle swimmer from Brazil, who participated at one Summer Olympics for his native country. At the 1936 Summer Olympics in Berlin, he swam the 100-metre freestyle, not reaching the finals.

paragraph_text: Portugal competed at the 1920 Summer Olympics in Antwerp, Belgium. A delegation of thirteen competitors participated in two sports, however no medals were won.

paragraph_text: Tug of war was contested as a team event in the Summer Olympics at every Olympiad from 1900 to 1920. Originally the competition was entered by groups called clubs. A country could enter more than one club in the competition, making it possible for one country to earn multiple medals. This happened in 1904, when the United States won all three medals, and in 1908 when the podium was occupied by three British teams. Sweden was also among the top countries with two medals, one as a member of the mixed team.

paragraph_text: Ice hockey is a sport that is contested at the Winter Olympic Games. A men's ice hockey tournament has been held every Winter Olympics (starting in 1924); an ice hockey tournament was also held at the 1920 Summer Olympics. From 1920 to 1968, the Olympics also acted as the Ice Hockey World Championships, and the two events occurred concurrently. From 1920 until 1984, only amateur athletes were allowed to compete in the tournament, and players from the National Hockey League (NHL) were not allowed to compete. The countries that benefited most were the Soviet Bloc countries of Eastern Europe, where top athletes were state - sponsored while retaining their status as amateurs. In 1970, after a disagreement over the definition of amateur players, Canada withdrew from the tournament and did not send a team to the 1972 or 1976 Winter Olympics. In 1986, the International Olympic Committee (IOC) decided to allow professional athletes to compete in the Olympics, and starting in 1998, the NHL allowed its players to participate. Women's ice hockey was added in 1992 and the first tournament was held at the 1998 Winter Olympics. Both events have been held at every Olympic Games since.

paragraph_text: Christian Willumsen Juhl (29 April 1898 – 27 September 1962) was a Danish gymnast who competed in the 1920 Summer Olympics. He was part of the Danish team, which was able to win the gold medal in the gymnastics men's team, free system event in 1920.

paragraph_text: Arnoud Eugène van der Biesen (December 28, 1899 Semarang, Dutch East Indies - February 17, 1968, The Hague) was a sailor from the Netherlands, who represented his native country at the 1920 Summer Olympics in Ostend, Belgium.

paragraph_text: He competed at the 1920 and the 1924 Summer Olympics. Vittorio Zucca has won four time the individual national championship. On the track in the sand of a 100 meters of the Olympic Games in Antwerp in 1920, he measured Vittorio Zucca, a native of Pula, at that time part of the Kingdom of Italy. Zucca was also in Paris 1924.

paragraph_text: Cambodia competed at the 1972 Summer Olympics in Munich, West Germany. The nation returned to the Olympic Games as the Khmer Republic (1970–1975) after missing the 1968 Summer Olympics. Owing to the troubled situation of the country Cambodia would not compete again until the 1996 Summer Olympics.

paragraph_text: The women's 4 × 100 metre freestyle relay was a swimming event held as part of the swimming at the 1920 Summer Olympics programme. It was the second appearance of the event.

paragraph_text: ISO 3166-2:CV is the entry for Cabo Verde in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1.

Question: What nation hosted the 1920 Summer Olympics, in which the country that has the rail system including Cabo Ruivo participated?
Answer: Belgium