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: Investiture Controversy | Statement: [Frederick I, Duke of Swabia, conflict, Investiture Controversy]

Target entity: Investiture Controversy
Context triple: [Frederick I, Duke of Swabia, conflict, Investiture Controversy]

• A. Investiture Controversy chosen
  The Investiture Controversy was an 11th–12th century power struggle between the papacy and secular rulers over who held the authority to appoint bishops and other high church officials.
• B. Pope–Theobald controversy
  The Pope–Theobald controversy was an 18th-century literary feud in which Alexander Pope attacked the editor and playwright Lewis Theobald as a dunce and poor critic, most famously in his satirical poem "The Dunciad."
• C. Great Rites Controversy
  The Great Rites Controversy was a major 16th-century Ming dynasty political and ideological dispute over imperial ancestral rites and succession that reshaped court factions and Confucian orthodoxy in China.
• D. Western Schism
  The Western Schism was a prolonged split within the Catholic Church (1378–1417) during which multiple rival claimants to the papacy simultaneously asserted their legitimacy, deeply dividing Christendom.
• E. Schism of 1159
  The Schism of 1159 was a major papal schism in which rival claimants to the papacy, including Alexander III and an imperial-backed antipope, divided the Church and European politics for nearly two decades.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.