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: Mongolia–Russia border | Statement: [Soviet–Mongolian border agreements (20th century), hasEffectOn, Mongolia–Russia border]

Target entity: Mongolia–Russia border
Context triple: [Soviet–Mongolian border agreements (20th century), hasEffectOn, Mongolia–Russia border]

• A. Mongolia–Russia border chosen
  The Mongolia–Russia border is the long international boundary separating Mongolia from the Russian Federation across the steppes, mountains, and river valleys of Central and North Asia.
• B. Mongolia–Manchukuo border
  The Mongolia–Manchukuo border was the frontier between Mongolia and the Japanese puppet state of Manchukuo, notorious as the site of major 1939 clashes between Soviet–Mongolian and Japanese–Manchukuoan forces.
• C. China–Mongolia border
  The China–Mongolia border is the international boundary separating the People’s Republic of China and Mongolia, stretching across remote deserts, grasslands, and mountain regions in East and Central Asia.
• D. Russia–China border
  The Russia–China border is the long international boundary separating the Russian Federation and the People’s Republic of China, stretching thousands of kilometers across rivers, mountains, and remote terrain in Northeast and Central Asia.
• E. Erenhot–Zamyn-Üüd border crossing
  The Erenhot–Zamyn-Üüd border crossing is a major road and rail gateway between China and Mongolia, serving as a key hub for trade and transit along the China–Mongolia corridor.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.