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: Mekong River system | Statement: [Can Tho, riverSystem, Mekong River system]

Target entity: Mekong River system
Context triple: [Can Tho, riverSystem, Mekong River system]

• A. Mekong River chosen
  The Mekong River is one of Asia’s longest and most important rivers, flowing from the Tibetan Plateau through several Southeast Asian countries before emptying into the South China Sea.
• B. Batang Hari River
  The Batang Hari River is the longest river in Sumatra, Indonesia, flowing through several provinces and serving as an important waterway for transportation, agriculture, and local communities.
• C. Chao Phraya River
  The Chao Phraya River is a major river in Thailand that flows through Bangkok and serves as a vital artery for the country’s transport, economy, and culture.
• D. Nam Ngum River
  The Nam Ngum River is a significant river in Laos known for its large hydropower dam and reservoir, which play a key role in the country’s electricity production and irrigation.
• E. Namoi River catchment
  The Namoi River catchment is a major river basin in northern New South Wales, Australia, encompassing agricultural lands and tributaries that drain into the Namoi River before joining the Barwon–Darling river system.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.