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: Blanche of Castile | Statement: [Charles I of Anjou, mother, Blanche of Castile]

Target entity: Blanche of Castile
Context triple: [Charles I of Anjou, mother, Blanche of Castile]

• A. Blanche of Castile chosen
  Blanche of Castile was a powerful 13th-century Queen of France and regent renowned for her political acumen and for effectively governing the kingdom during the minority and absences of her son, King Louis IX.
• B. Berengaria of Castile
  Berengaria of Castile was a 13th-century queen regnant of Castile and briefly of León, noted for her political acumen and for being the mother of Ferdinand III, who united the crowns of Castile and León.
• C. Constance of Castile
  Constance of Castile was a 14th-century Castilian princess and claimant to the Castilian throne who became the second wife of John of Gaunt, Duke of Lancaster, thereby linking the English royal family to the Castilian royal line.
• D. Berengaria of Navarre
  Berengaria of Navarre was a medieval queen consort of England, known as the wife of King Richard the Lionheart and for never having set foot in England during his reign.
• E. Sancha of Castile, Queen of Aragon
  Sancha of Castile, Queen of Aragon, was a 12th–13th century Castilian princess who became queen consort of Aragon through marriage to King Alfonso II and played a notable dynastic role as the mother of King Peter II of Aragon.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.