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: [High Middle Ages, hasMajorEvent, Investiture Controversy]

Target entity: Investiture Controversy
Context triple: [High Middle Ages, hasMajorEvent, 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. 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.
• C. East–West Schism
  The East–West Schism was the 1054 split between the Roman Catholic and Eastern Orthodox Churches, driven by long-standing theological, political, and cultural disputes that permanently divided Western and Eastern Christianity.
• D. Concordat of Worms
  The Concordat of Worms was a 1122 agreement between the Holy Roman Emperor and the papacy that ended the Investiture Controversy by distinguishing between the spiritual and temporal powers in the appointment of bishops.
• E. Affair of the Placards
  The Affair of the Placards was a 1534 anti-Catholic propaganda incident in France, in which radical Protestant posters denouncing the Mass were publicly displayed, sharply escalating religious tensions that helped set the stage for the later French Wars of Religion.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.