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: ROKS Cheonan sinking incident | Statement: [Korean People's Navy, engagedIn, ROKS Cheonan sinking incident]

Target entity: ROKS Cheonan sinking incident
Context triple: [Korean People's Navy, engagedIn, ROKS Cheonan sinking incident]

• A. Sinking of ROKS Cheonan chosen
  The Sinking of ROKS Cheonan was a 2010 incident in which a South Korean naval corvette was destroyed near the disputed maritime border with North Korea, killing 46 sailors and sharply escalating inter-Korean tensions.
• B. Bombardment of Yeonpyeong
  The Bombardment of Yeonpyeong was a 2010 North Korean artillery attack on the South Korean island of Yeonpyeong that marked one of the most serious military clashes between the two Koreas since the Korean War.
• C. Imo Incident
  The Imo Incident was an 1882 mutiny of Korean soldiers in Seoul that escalated into violent unrest and foreign intervention, highlighting Korea’s internal instability and vulnerability to outside powers.
• D. April 12 Incident
  The April 12 Incident was a pivotal 1927 event in Shanghai during the Chinese Civil War, when Chiang Kai-shek’s forces violently purged Communists and labor activists from the Nationalist movement, triggering a major political split in China.
• E. Cheonan
  Cheonan is a major city in South Chungcheong Province, South Korea, known as a regional transportation hub and commercial center.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.