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: Age of Metternich | Statement: [Prussian Ministry of Foreign Affairs, historicalPeriod, Age of Metternich]

Target entity: Age of Metternich
Context triple: [Prussian Ministry of Foreign Affairs, historicalPeriod, Age of Metternich]

• A. Thirty Years' Peace
  The Thirty Years' Peace was a mid-5th century BCE agreement between Athens and Sparta intended to stabilize Greek interstate relations and delay renewed large-scale conflict between their rival alliances.
• B. 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.
• 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. Napoleonic era
  The Napoleonic era was the period of European history dominated by Napoleon Bonaparte’s rise, rule, and wars from the late 1790s to his defeat in 1815, marked by sweeping political, military, and legal transformations across the continent.
• E. Biedermeier
  Biedermeier was a Central European cultural and artistic style of the early 19th century characterized by middle-class domesticity, simplicity, and restrained elegance in art, furniture, and interior design.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.