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: Tumu Crisis | Statement: [Yu Qian, notableEvent, Tumu Crisis]

Target entity: Tumu Crisis
Context triple: [Yu Qian, notableEvent, Tumu Crisis]

• A. Tumu Crisis chosen
  The Tumu Crisis was a 1449 military disaster in which Mongol forces captured the Ming emperor Zhengtong, severely undermining the Ming dynasty’s authority and exposing its military weaknesses.
• B. Battle of Sarhu
  The Battle of Sarhu was a decisive 1619 conflict in which the rising Later Jin (Manchu) forces defeated the Ming dynasty and its allies, marking a major step toward Manchu dominance in Northeast Asia and the eventual founding of the Qing dynasty.
• C. Ming–Oirat wars
  The Ming–Oirat wars were a series of 15th-century military conflicts between China’s Ming dynasty and the Oirat Mongols that shaped the balance of power on the northern frontier of East Asia.
• D. Manchu invasions
  The Manchu invasions were a series of 17th-century military campaigns by Manchu forces that weakened and ultimately helped topple China’s Ming dynasty, paving the way for the establishment of the Qing dynasty.
• E. Ming–Northern Yuan war of 1387
  The Ming–Northern Yuan war of 1387 was a key late-14th-century campaign in which the Ming dynasty decisively defeated the Northern Yuan Mongols, helping to secure Ming control over the northern frontier.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.