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 the 1990s | Statement: [Ussuri River, borderTreaty, Sino-Russian border agreements of the 1990s]

Target entity: Sino-Russian border agreements of the 1990s
Context triple: [Ussuri River, borderTreaty, Sino-Russian border agreements of the 1990s]

• 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. 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.
• C. 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.
• 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. Soviet–Japanese border conflicts
  The Soviet–Japanese border conflicts were a series of undeclared military clashes between the Soviet Union (with Mongolia) and Imperial Japan (with Manchukuo) along the Manchurian–Mongolian frontier in the late 1930s, culminating in the large-scale Battle of Khalkhin Gol.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.