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: Matilda of Leuven | Statement: [Eustace II, Count of Boulogne, mother, Matilda of Leuven]

Target entity: Matilda of Leuven
Context triple: [Eustace II, Count of Boulogne, mother, Matilda of Leuven]

• A. Matilda of Leuven chosen
  Matilda of Leuven was a 12th-century noblewoman from the House of Leuven who became Countess of Boulogne through marriage and played a role in the politics of northern France and Flanders.
• B. Matilda of Brabant
  Matilda of Brabant was a 13th-century noblewoman from the ducal house of Brabant who became Countess of Holland and Zeeland and the mother of King William II of Holland, a Roman-German king.
• C. Matilda of Ringelheim
  Matilda of Ringelheim was a 10th-century German queen and later canonized saint, renowned for her piety, charitable works, and role as the matriarch of the Ottonian royal line.
• D. Matilda of Béthune
  Matilda of Béthune was a 13th-century noblewoman of the Béthune family who became part of the Scottish royal circle through her marriage and motherhood to Prince Alexander of Scotland.
• E. Matilda of Tübingen
  Matilda of Tübingen was a 13th-century Swabian noblewoman from the comital house of Tübingen, best known as the mother of Gertrude of Hohenberg, the first wife of King Rudolf I of Germany.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.