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: Undurkhaan River | Statement: [Onon River, hasLeftTributary, Undurkhaan River]

Target entity: Undurkhaan River
Context triple: [Onon River, hasLeftTributary, Undurkhaan River]

• A. Khalkha River
  The Khalkha River, also known as Khalkhin Gol, is a river in eastern Mongolia and northeastern China best known as the site of major 1939 battles between Soviet-Mongolian and Japanese forces.
• B. Khabur River
  The Khabur River is a major river in northeastern Syria that flows through the Jazira region and is historically significant as part of ancient Mesopotamia’s irrigation and settlement network.
• C. Khalgan River
  The Khalgan River is a lesser-known watercourse in the Caucasus region that serves as a tributary feeding into the larger Samur River system.
• D. Kaidu River
  The Kaidu River is a significant river in Xinjiang, China, that flows through the Bayinbulak Grassland and feeds Bosten Lake, supporting agriculture and settlements such as the city of Korla.
• E. Bohtan River
  The Bohtan River is a significant watercourse in southeastern Turkey that flows through rugged, mountainous terrain before joining the Tigris River.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Undurkhaan River
Target entity description: The Undurkhaan River is a Mongolian watercourse that serves as a left-bank tributary of the Onon River within the Amur River basin.

• A. Khalkha River
  The Khalkha River, also known as Khalkhin Gol, is a river in eastern Mongolia and northeastern China best known as the site of major 1939 battles between Soviet-Mongolian and Japanese forces.
• B. Khabur River
  The Khabur River is a major river in northeastern Syria that flows through the Jazira region and is historically significant as part of ancient Mesopotamia’s irrigation and settlement network.
• C. Khalgan River
  The Khalgan River is a lesser-known watercourse in the Caucasus region that serves as a tributary feeding into the larger Samur River system.
• D. Kaidu River
  The Kaidu River is a significant river in Xinjiang, China, that flows through the Bayinbulak Grassland and feeds Bosten Lake, supporting agriculture and settlements such as the city of Korla.
• E. Bohtan River
  The Bohtan River is a significant watercourse in southeastern Turkey that flows through rugged, mountainous terrain before joining the Tigris River.
• F. None of above. chosen