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: Metternich system | Statement: [Restoration period in Europe, hasPart, Metternich system]

Target entity: Metternich system
Context triple: [Restoration period in Europe, hasPart, Metternich system]

• A. Versailles system
  The Versailles system was the post–World War I international order established by the Treaty of Versailles and related agreements, designed to reshape Europe’s borders, limit German power, and uphold a fragile collective security framework.
• B. Holy Alliance
  The Holy Alliance was a coalition of major European monarchies formed after the Napoleonic Wars to preserve conservative order and suppress revolutionary movements across the continent.
• C. Congress of Vienna
  The Congress of Vienna was an international diplomatic conference held in 1814–1815 that redrew the map of Europe and established a balance-of-power system after the defeat of Napoleon.
• D. Concert of Europe chosen
  The Concert of Europe was a 19th-century diplomatic system in which the major European powers cooperated to maintain the balance of power and suppress revolutionary movements after the Napoleonic Wars.
• E. Quadruple Alliance
  The Quadruple Alliance was an early 18th-century coalition of major European powers formed to curb Spanish ambitions and maintain the balance of power after the War of the Spanish Succession.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.