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: Khải Định era | Statement: [Vietnamese traditional calendar, eraNameUsed, Khải Định era]

Target entity: Khải Định era
Context triple: [Vietnamese traditional calendar, eraNameUsed, Khải Định era]

• A. Tự Đức era
  The Tự Đức era was a period in 19th-century Vietnam under Emperor Tự Đức, marked by Confucian conservatism, internal strife, and increasing French colonial encroachment.
• B. Khải Định chosen
  Khải Định was the twelfth emperor of Vietnam’s Nguyễn dynasty, known for his pro-French stance and the fusion of traditional Vietnamese and European styles in his architectural projects, most notably his ornate tomb near Huế.
• C. Kaiyuan era
  The Kaiyuan era was a prosperous and culturally flourishing period during the reign of Emperor Xuanzong in the High Tang dynasty of China.
• D. Later Lý dynasty
  The Later Lý dynasty was a Vietnamese royal dynasty (1009–1225) that consolidated centralized rule, fostered Buddhism and Confucian statecraft, and oversaw significant cultural and territorial development in medieval Vietnam.
• E. Early Lê dynasty
  The Early Lê dynasty was a short-lived Vietnamese royal dynasty (980–1009) that helped consolidate national independence after Chinese rule and laid foundations for later Vietnamese states.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.