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: Empire of Vietnam under the Nguyễn dynasty | Statement: [Treaty of Saigon (1874), signatory, Empire of Vietnam under the Nguyễn dynasty]

Target entity: Empire of Vietnam under the Nguyễn dynasty
Context triple: [Treaty of Saigon (1874), signatory, Empire of Vietnam under the Nguyễn dynasty]

• A. Imperial Vietnam
  Imperial Vietnam was the historical Vietnamese monarchy that developed a Confucian-bureaucratic state deeply influenced by Chinese culture while maintaining its own distinct political and cultural identity.
• B. Empire of Vietnam
  The Empire of Vietnam was a short-lived Japanese-backed puppet state that existed in 1945 during World War II, preceding the establishment of the Democratic Republic of Vietnam.
• C. Later Lê dynasty
  The Later Lê dynasty was a Vietnamese royal house that ruled Đại Việt from the mid-15th to late 18th century, overseeing a period of political consolidation, Confucian state-building, and territorial expansion.
• D. Nguyễn dynasty chosen
  The Nguyễn dynasty was the last ruling imperial family of Vietnam, governing the country from the early 19th century until the mid-20th century under a Confucian monarchy centered in Huế.
• E. Tây Sơn dynasty
  The Tây Sơn dynasty was a late 18th-century Vietnamese ruling house founded by the Tây Sơn brothers, known for unifying the country, overthrowing both the Lê and Nguyễn lords, and repelling major foreign invasions before being replaced by the Nguyễn dynasty.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.