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: [Hậu River, partOf, Mekong River system]

Target entity: Mekong River system
Context triple: [Hậu River, partOf, 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. Laos river system
  The Laos river system is the network of rivers and tributaries that drain the territory of Laos, forming a major part of the Mekong Basin and supporting the country’s ecosystems, transportation, and agriculture.
• C. Thai–Myanmar river system
  The Thai–Myanmar river system is a network of rivers and tributaries that flow along and across the border between Thailand and Myanmar, playing a key role in the region’s ecology, transportation, and cross-border livelihoods.
• D. Mekongga
  Mekongga are an indigenous subgroup of the Tolaki people of Southeast Sulawesi, Indonesia, with their own distinct language and cultural traditions.
• E. Cambodia river system
  The Cambodia river system is the interconnected network of rivers and tributaries, including major waterways like the Se Kong, that drain Cambodia and support its ecosystems, agriculture, and transportation.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.