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: In European usage, sometimes referred to all of Vietnam, but later restricted to the southern region | Statement: [Cochinchina, note, In European usage, sometimes referred to all of Vietnam, but later restricted to the southern region]

Target entity: In European usage, sometimes referred to all of Vietnam, but later restricted to the southern region
Context triple: [Cochinchina, note, In European usage, sometimes referred to all of Vietnam, but later restricted to the southern region]

• A. French Indochina
  French Indochina was a French colonial federation in Southeast Asia, comprising territories such as Vietnam, Laos, and Cambodia, that existed from the late 19th century until the mid-20th century.
• B. Cochinchina chosen
  Cochinchina was the southern region of Vietnam that became a French colony and later formed part of French Indochina.
• C. Tonkin
  Tonkin was a historical region in northern Vietnam, centered around Hanoi, that became a French protectorate and key part of colonial French Indochina.
• D. southern China
  Southern China is a culturally and linguistically diverse region of China, encompassing provinces such as Guangdong, Guangxi, Fujian, and Hainan, known historically as a major source of Chinese migration and a hub of maritime trade.
• E. Protectorate of Annam
  The Protectorate of Annam was a central Vietnamese monarchy under French colonial rule, forming one of the key constituent regions of French Indochina.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.