Question: After whom is the country where Roseau River is located named?

full_context: Document 1: Dauphin Quarter: Dauphin is a Quarter on the Caribbean island nation of Saint Lucia. It contains a village of the same name, located at . It was home to Amerindians, the Island Caribs, who settled there. To this day, there are ruins which serve as a reminder of people who lived there long before Christopher Columbus crossed the Atlantic from Europe.
Document 2: Vieux Fort River: The Vieux Fort River is a river in Saint Lucia. It flows south-southeast, reaching the coast close to the country's southernmost point at the town of Vieux Fort.
Document 3: Canelles River: The Canelles River is a river in Saint Lucia. It flows southeast from the central highlands in the south of the island, reaching the Atlantic Ocean to the south of the town of Micoud.
Document 4: Rio de la Plata (Puerto Rico): The La Plata River () is the longest river in the island of Puerto Rico. It is located in the north coast of the island. It flows from south to north, and drains into the Atlantic Ocean about 11 miles (18 km) west of San Juan. The mouth of the river is a resort area with white sandy beaches.
Document 5: 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 6: 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 7: Saint Lucia: One of the Windward Islands, "Saint Lucia" was named after Saint Lucy of Syracuse (AD 283 – 304). It is the only country in the world named after a historical woman (Ireland is named after the Celtic goddess of fertility Eire). Legend states French sailors were shipwrecked here on 13 December, the feast day of St. Lucy, thus naming the island in honor of "Sainte Lucie."
Document 8: Dennery River: The Dennery River is the river on the southern end of the fishing village of Dennery on the island of Saint Lucia. The community of Dennery is built on its flood plain and in recent times has been the cause of serious flooding in the coastal community. It drains into the Atlantic Ocean.
Document 9: Soufrière River: The Soufrière river (French la Soufrière) is a river on the island of Saint Lucia. The French term "Soufrière" is a generic one referring to "Sulphury" volcanic peaks called La Soufrière or Soufrière Hills on each of St. Vincent, St. Lucia, Dominica, Guadeloupe.
Document 10: Canaries, Saint Lucia: Canaries (or Kanawe in Creole) is located on the West Coast of Saint Lucia. It is a small fishing village and it is nestled along the West Coast road, between Anse La Raye and Soufriere, and there are scenic views from both the Northern and Southern approaches.
Document 11: Fond d'Or River: The Fond d'Or River is a river in Saint Lucia. It rises in the centre of the island, flowing north and then east to its mouth in Fond d'Or Bay, close to the village of Dennery on the central east coast.
Document 12: 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 13: Haiti: The island was named La Española and claimed by Spain, which ruled until the early 17th century. Competing claims and settlements by the French led to the western portion of the island being ceded to France, which named it Saint-Domingue. Sugarcane plantations, worked by slaves brought from Africa, were established by colonists.
Document 14: La Treille, Saint Lucia: La Treille is a town on the island of Saint Lucia; it is located towards the heart of the island, between Sarot and Morne Ciseaux.
Document 15: Roseau, Saint Lucia: Roseau is a community on the island of Saint Lucia; it is located on the western side of the island, south of Marigot.
ground_truth: Saint Lucy
sub_queries: Roseau River >> country Answer: Saint Lucia
Whom is Saint Lucia named after? Answer: Saint Lucy