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: Sino–Russian border agreements of 1991 | Statement: [Russia–China border, historicallyAffectedByTreaty, Sino–Russian border agreements of 1991]

Target entity: Sino–Russian border agreements of 1991
Context triple: [Russia–China border, historicallyAffectedByTreaty, Sino–Russian border agreements of 1991]

• A. Treaty on the Russian-Chinese Border (1991) chosen
  The Treaty on the Russian-Chinese Border (1991) is a post–Cold War agreement that settled major sections of the long-disputed frontier between Russia and China, laying groundwork for improved bilateral relations and later border accords.
• B. Supplementary Agreement on the Eastern Section of the China–Russia Boundary (2004)
  The Supplementary Agreement on the Eastern Section of the China–Russia Boundary (2004) is a bilateral treaty that finalized and clarified the remaining disputed segments of the eastern land border between China and Russia, helping to normalize and stabilize relations between the two countries.
• C. Soviet–Mongolian border agreements (20th century)
  The Soviet–Mongolian border agreements of the 20th century were a series of treaties that formally defined and adjusted the frontier between the Soviet Union and Mongolia, shaping the modern boundary between Mongolia and Russia.
• D. Sino–Soviet border negotiations of the 1970s
  The Sino–Soviet border negotiations of the 1970s were a series of diplomatic talks between China and the Soviet Union aimed at easing tensions and resolving longstanding territorial disputes along their shared frontier after years of armed confrontation.
• E. Treaty of Good-Neighborliness and Friendly Cooperation between Russia and China
  The Treaty of Good-Neighborliness and Friendly Cooperation between Russia and China is a long-term strategic partnership agreement signed in 2001 that formalized political, economic, and security cooperation between the two countries after the Cold War.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.