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 region | Statement: [Khmer National Armed Forces, theaterOfOperations, Mekong River region]

Target entity: Mekong River region
Context triple: [Khmer National Armed Forces, theaterOfOperations, Mekong River region]

• A. Mekong Delta
  The Mekong Delta is a vast, fertile river delta region in southern Vietnam known for its intricate network of waterways, rice paddies, and floating markets.
• B. 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.
• C. Indochinese Peninsula
  The Indochinese Peninsula is a large mainland region of Southeast Asia encompassing countries such as Vietnam, Thailand, Cambodia, Laos, Myanmar, and parts of Malaysia, known for its diverse cultures, histories, and tropical landscapes.
• D. Irrawaddy Delta
  The Irrawaddy Delta is a vast, fertile alluvial plain in southern Myanmar, known for its dense network of waterways, rice cultivation, and vulnerability to flooding and cyclones.
• E. 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.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.