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: Ussuri River sector of the border | Statement: [Sino–Soviet border negotiations of the 1970s, concerns, Ussuri River sector of the border]

Target entity: Ussuri River sector of the border
Context triple: [Sino–Soviet border negotiations of the 1970s, concerns, Ussuri River sector of the border]

• A. Russia–China border chosen
  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.
• B. Trans-Ural frontier
  The Trans-Ural frontier was a historical borderland region east of the Ural Mountains that served as a key zone of Russian expansion, military defense, and colonization in Central Asia.
• C. Chita Peninsula
  The Chita Peninsula is a landform in central Japan’s Aichi Prefecture that separates Ise Bay from Mikawa Bay and hosts industrial cities, ports, and coastal communities.
• D. North Korea–Russia border
  The North Korea–Russia border is a short, strategically important boundary in Northeast Asia that connects the two countries by land and river and plays a notable role in regional security and trade dynamics.
• E. 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.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.