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-Soviet border agreement of 1991 | Statement: [Sino–Soviet border negotiations of the 1970s, relatedTo, Sino-Soviet border agreement of 1991]

Target entity: Sino-Soviet border agreement of 1991
Context triple: [Sino–Soviet border negotiations of the 1970s, relatedTo, Sino-Soviet border agreement 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. 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. Sino–Soviet Treaty of Friendship and Alliance (1945)
  The Sino–Soviet Treaty of Friendship and Alliance (1945) was a World War II–era agreement between the Republic of China and the Soviet Union that secured Soviet recognition of Chinese sovereignty over Manchuria and Mongolia in exchange for political and military concessions, shaping postwar power dynamics in East Asia.
• D. Treaty of Good Neighbourship and Friendly Cooperation (1991)
  The Treaty of Good Neighbourship and Friendly Cooperation (1991) is a landmark post–Cold War agreement between Poland and Germany that normalized relations, affirmed borders, and laid the foundation for extensive political, economic, and cultural cooperation between the two countries.
• E. Sino-Nepalese Treaty of Peace and Friendship
  The Sino-Nepalese Treaty of Peace and Friendship is a 1960 agreement between China and Nepal that formally established diplomatic relations and laid the foundation for defining and managing their shared Himalayan border.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.