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: Isabel FitzRobert | Statement: [Mabel FitzRobert, sibling, Isabel FitzRobert]

Target entity: Isabel FitzRobert
Context triple: [Mabel FitzRobert, sibling, Isabel FitzRobert]

• A. Isabel Marshal
  Isabel Marshal was a 13th-century English noblewoman from the powerful Marshal family, known for her influential dynastic marriages into the highest ranks of the English aristocracy.
• B. Mabel FitzRobert
  Mabel FitzRobert was a 12th-century Anglo-Norman noblewoman of the powerful de Clare–FitzRobert family, connected to the earldom of Gloucester.
• C. Jane Fitzwilliam
  Jane Fitzwilliam was the wife of the renowned English architect Sir Christopher Wren.
• D. Elizabeth de Courtenay
  Elizabeth de Courtenay was a French noblewoman of the Courtenay family, notable as the mother of Peter II of Courtenay, Latin Emperor of Constantinople.
• E. Rosamund Mortimer
  Rosamund Mortimer is a member of the Mortimer family and the sister of British actress and screenwriter Emily Mortimer.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Isabel FitzRobert
Triple: [Mabel FitzRobert, sibling, Isabel FitzRobert]

Isabel FitzRobert was a 12th-century Anglo-Norman noblewoman of the powerful FitzRobert family, connected to the earls of Gloucester and prominent in the aristocratic networks of medieval England.

Target entity: Isabel FitzRobert
Target entity description: Isabel FitzRobert was a 12th-century Anglo-Norman noblewoman of the powerful FitzRobert family, connected to the earls of Gloucester and prominent in the aristocratic networks of medieval England.

• A. Isabel Marshal
  Isabel Marshal was a 13th-century English noblewoman from the powerful Marshal family, known for her influential dynastic marriages into the highest ranks of the English aristocracy.
• B. Mabel FitzRobert chosen
  Mabel FitzRobert was a 12th-century Anglo-Norman noblewoman of the powerful de Clare–FitzRobert family, connected to the earldom of Gloucester.
• C. Jane Fitzwilliam
  Jane Fitzwilliam was the wife of the renowned English architect Sir Christopher Wren.
• D. Elizabeth de Courtenay
  Elizabeth de Courtenay was a French noblewoman of the Courtenay family, notable as the mother of Peter II of Courtenay, Latin Emperor of Constantinople.
• E. Rosamund Mortimer
  Rosamund Mortimer is a member of the Mortimer family and the sister of British actress and screenwriter Emily Mortimer.
• F. None of above.