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: Mongol conquest of the Song dynasty | Statement: [Southern Song, notableEvent, Mongol conquest of the Song dynasty]

Target entity: Mongol conquest of the Song dynasty
Context triple: [Southern Song, notableEvent, Mongol conquest of the Song dynasty]

• A. Mongol conquest of the Western Xia
  The Mongol conquest of the Western Xia was an early 13th-century campaign in which Genghis Khan’s forces destroyed the Tangut-led Western Xia dynasty, helping to launch the Mongol Empire’s rapid expansion across Asia.
• B. Mongol conquest of Dali Kingdom
  The Mongol conquest of the Dali Kingdom was a 13th-century campaign in which the Mongol Empire subjugated the Dali state in present-day Yunnan, securing control over a key region in southwestern China.
• C. Mongol conquest of the Qara Khitai
  The Mongol conquest of the Qara Khitai was a key early 13th-century campaign in Central Asia in which Genghis Khan’s forces destroyed the Qara Khitai (Western Liao) state, expanding Mongol control deep into the region.
• D. Mongol–Song War chosen
  The Mongol–Song War was the protracted 13th-century conflict in which the Mongol Empire conquered the Southern Song dynasty, leading to the unification of China under Mongol rule and the establishment of the Yuan dynasty.
• E. Mongol conquest of Tibet
  The Mongol conquest of Tibet was a 13th-century military and political campaign through which the Mongol Empire brought Tibet under its influence, laying the foundations for later Yuan dynasty control over the region.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.