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: Long March | Statement: [Yan'an, associatedWithEvent, Long March]

Target entity: Long March
Context triple: [Yan'an, associatedWithEvent, Long March]

• A. Long March chosen
  The Long March was the epic 1934–1935 strategic retreat of the Chinese Red Army that cemented Mao Zedong’s rise and became a founding myth of the Chinese Communist revolution.
• B. Pioneer Column expedition
  The Pioneer Column expedition was an 1890 British colonial venture that led a force of settlers and police north from South Africa to occupy and establish white rule over what became Southern Rhodesia (now Zimbabwe).
• C. Crossing of the Yangtze River Campaign
  The Crossing of the Yangtze River Campaign was a decisive 1949 military offensive by Chinese Communist forces that broke Nationalist defenses along the Yangtze and paved the way for the capture of Nanjing and the establishment of the People’s Republic of China.
• D. Pingjin Campaign
  The Pingjin Campaign was a major 1948–1949 military offensive by the Chinese Communist forces that led to the capture of Beijing and Tianjin and decisively shifted the balance of the Chinese Civil War in their favor.
• E. Central China Front
  The Central China Front was a major Japanese military formation responsible for conducting operations in central China during the Second Sino-Japanese War, including the Wuhan campaign.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.