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-Mongolian agreements (late 19th–early 20th century) | Statement: [Russia and Mongolia, borderDemarcationTreaties, Sino-Russian-Mongolian agreements (late 19th–early 20th century)]

Target entity: Sino-Russian-Mongolian agreements (late 19th–early 20th century)
Context triple: [Russia and Mongolia, borderDemarcationTreaties, Sino-Russian-Mongolian agreements (late 19th–early 20th century)]

• A. Treaty on the Russian-Chinese Border (1991)
  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. Treaties of the Russian Empire chosen
  Treaties of the Russian Empire are the international agreements concluded by imperial Russia that shaped its territorial expansion, diplomatic relations, and geopolitical influence from the 18th to early 20th centuries.
• C. Russo-Turkish treaties
  The Russo-Turkish treaties are a series of agreements concluded between the Russian Empire and the Ottoman Empire that reshaped territorial control, trade rights, and political influence in Eastern Europe and the Near East over several centuries.
• D. 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.
• E. Treaties of the Tsardom of Russia
  Treaties of the Tsardom of Russia are diplomatic agreements concluded by the Russian state during its tsarist period, reflecting its territorial expansion, military conflicts, and evolving role in European and Eurasian politics before the establishment of the Russian Empire.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.