Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: Niger River drainage basin | Statement: [Rima River, partOf, Niger River drainage basin]

Target entity: Niger River drainage basin
Context triple: [Rima River, partOf, Niger River drainage basin]

• A. Sanaga River basin
  The Sanaga River basin is the extensive watershed in Cameroon that collects and channels rainfall and tributary flows into the Sanaga River, the country’s largest river system and a key resource for hydropower, ecosystems, and local livelihoods.
• B. Niger River valley
  The Niger River valley is a fertile and historically significant region in West Africa that has long supported dense human settlement, agriculture, and trade along the course of the Niger River.
• C. Athi River basin
  The Athi River basin is a major drainage basin in Kenya that collects waters from rivers such as the Nairobi River and ultimately feeds into the Indian Ocean.
• D. Bandama River basin
  The Bandama River basin is the largest river drainage system in Côte d'Ivoire, encompassing much of the country's central region and supporting agriculture, settlements, and hydropower.
• E. Niger River chosen
  The Niger River is a major West African river that flows in a great arc through countries including Guinea, Mali, Niger, and Nigeria before emptying into the Atlantic Ocean.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.