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: [Duchy of Saxony, significantEvent, Investiture Controversy]

Target entity: Investiture Controversy
Context triple: [Duchy of Saxony, significantEvent, 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. 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.
• C. 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.
• D. 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.
• E. Nestorian controversy
  The Nestorian controversy was a 5th-century Christological dispute over the nature and person of Christ, centering on the teachings of Nestorius and the title of Mary as Theotokos, which led to major church councils and lasting schisms.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.