Question: When did the country where the Layou River is found first complete in Olympic games?

full_context: Document 1: List of Olympic Games host cities: The Games have primarily been hosted in the continents of Europe (36 editions) and North America (12 editions); eight Games have been hosted in Asia and two have been hosted in Oceania. In 2016, Rio de Janeiro became South America's first Olympic host city, while the African continent is yet to hold the Games. Other major geographic regions which have never hosted the Olympics include the Middle East, the Indian subcontinent, the Caribbean, and Southeast Asia.
Document 2: Dominican Republic at the 1964 Summer Olympics: The Dominican Republic competed in the Summer Olympic Games for the first time at the 1964 Summer Olympics in Tokyo, Japan.
Document 3: Batali River: The Batali River is a river in Dominica. It rises on the southern slopes of Morne Diablotins, flowing southwest to reach the Caribbean Sea on the country's northwestern coast, close to the town of Barroui.
Document 4: Rosalie River: The Rosalie River is a river in Dominica. It rises on the eastern slopes of Morne Trois Pitons, flowing east to reach the Atlantic Ocean on the country's eastern coast, close to the town of Rosalie.
Document 5: Jamaica at the 2008 Summer Olympics: Jamaica at the 2008 Summer Olympics IOC code JAM NOC Jamaica Olympic Association Website www.teamja.org in Beijing Competitors 50 in 4 sports Flag bearer Veronica Campbell - Brown Medals Ranked 15th Gold Silver Bronze Total 5 10 Summer Olympics appearances (overview) 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 2000 2008 2012 2016 Other related appearances British West Indies (1960)
Document 6: Dominican Republic: Baseball is by far the most popular sport in the Dominican Republic. The country has a baseball league of six teams. Its season usually begins in October and ends in January. After the United States, the Dominican Republic has the second highest number of Major League Baseball (MLB) players. Ozzie Virgil, Sr. became the first Dominican-born player in the MLB on September 23, 1956. Juan Marichal, Pedro Martínez, and Vladimir Guerrero are the only Dominican-born players in the Baseball Hall of Fame. Other notable baseball players born in the Dominican Republic are José Bautista, Adrián Beltré, George Bell, Robinson Canó, Rico Carty, Bartolo Colón, Nelson Cruz, Edwin Encarnación, Ubaldo Jiménez, Francisco Liriano, David Ortiz, Plácido Polanco, Albert Pujols, Hanley Ramírez, Manny Ramírez, José Reyes, Sammy Sosa, and Miguel Tejada. Felipe Alou has also enjoyed success as a manager and Omar Minaya as a general manager. In 2013, the Dominican team went undefeated en route to winning the World Baseball Classic.
Document 7: 1896 Summer Olympics: The concept of national teams was not a major part of the Olympic movement until the Intercalated Games 10 years later, though many sources list the nationality of competitors in 1896 and give medal counts. There are significant conflicts with regard to which nations competed. The International Olympic Committee gives a figure of 14, but does not list them. The following 14 are most likely the ones recognised by the IOC. Some sources list 12, excluding Chile and Bulgaria; others list 13, including those two but excluding Italy. Egypt is also sometimes included because of Dionysios Kasdaglis' participation. Belgium and Russia had entered the names of competitors, but withdrew.
Document 8: Dominica at the Olympics: Dominica first competed at the Olympic Games in 1996, and has participated in each Games since then.  Dominica has yet to win any medals at the Olympic Games.
Document 9: Layou River: The Layou River is a river in Dominica. It rises in the interior of the country, flowing westward to reach the Caribbean Sea on the country's central western coast, very close to the town of St. Joseph. It is the longest and deepest river in Dominica.
Document 10: Coulibistrie River: The Coulibistrie River is a river on the Caribbean island of Dominica. It flows from the interior westward through a deep valley, and empties into the Caribbean Sea north of Batalie Bay. It is fast-flowing, with small rapids and numerous bathing pools.
Document 11: River Quanery: The River Quanery is a river in Dominica. It rises on the northern slopes of Morne Trois Pitons, flowing northeast to reach the Atlantic Ocean on the country's central eastern coast, close to the town of Castle Bruce.
Document 12: Demerara River: The Demerara River is a river in eastern Guyana that rises in the central rainforests of the country and flows to the north for 346 kilometres until it reaches the Atlantic Ocean. Georgetown, Guyana's largest seaport and capital, is situated on the east bank of the river's mouth. The river divides Essequibo Islands-West Demerara (Region 3) on the west bank from Demerara-Mahaica (Region 4) to the east. The Demerara's estuary is narrow and the flowrate is rapid. This scouring action maintains a 5-to-6-metre-deep direct channel to the ocean. The river's deep brown color is primarily the result of the massive quantities of silt carried from upriver by the powerful currents. So powerful are these currents, that the ocean retains the Demerara's brown color for a considerable distance out to sea.
Document 13: Roseau River (Saint Lucia): The Roseau River is a river in Saint Lucia. It flows north and then west from the central highlands in the south of the island, reaching the Caribbean Sea to the north of the town of Anse la Raye. The Roseau river is also the longest in the country and is dammed by the John Compton Dam near Millet.
Document 14: Dublanc River: The Dublanc River is a river in Dominica. It rises on the northwestern slopes of Morne Diablotins, flowing west to reach the Caribbean Sea on the country's northwestern coast.
Document 15: India at the Olympics: India first participated at the Olympic Games in 1900, with a lone athlete (Norman Pritchard) winning two medals - both silver - in athletics. The nation first sent a team to the Summer Olympic Games in 1920, and has participated in every Summer Games since then. India has also competed at several Winter Olympic Games beginning in 1964. Indian athletes have won a total of 28 medals so far, all at the Summer Games. For a period of time, India national field hockey team was dominant in Olympic competition, winning eleven medals in twelve Olympics between 1920 and 1980. The run included 8 gold medals total and six successive gold medals from 1928 -- 1956
ground_truth: 1996
sub_queries: Layou River >> country Answer: Dominica
When did Dominica first compete in Olympic games? Answer: 1996