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: Joan Mortimer | Statement: [Roger Mortimer, 1st Earl of March, child, Joan Mortimer]

Target entity: Joan Mortimer
Context triple: [Roger Mortimer, 1st Earl of March, child, Joan Mortimer]

• A. Mary Stewart, Countess of Angus
  Mary Stewart, Countess of Angus, was a medieval Scottish noblewoman and daughter of King Robert III of Scotland who played a role in the dynastic alliances of the Scottish royal family.
• B. Elizabeth Douglas, Countess of Morton
  Elizabeth Douglas, Countess of Morton, was a Scottish noblewoman of the powerful Douglas family who became Countess of Morton through her marriage to James Douglas, 4th Earl of Morton, a prominent 16th-century Scottish regent.
• C. Margaret Mortimer
  Margaret Mortimer was a medieval English noblewoman of the powerful Mortimer family, daughter of Roger Mortimer, 1st Earl of March, and a figure in the aristocratic networks surrounding the reign of Edward II and Edward III.
• D. Katherine Mortimer
  Katherine Mortimer was a 14th-century English noblewoman, daughter of the powerful Marcher lord Roger Mortimer, 1st Earl of March, and a member of the influential Mortimer family during the reign of Edward III.
• E. Marjorie, Countess of Carrick
  Marjorie, Countess of Carrick, was a 13th-century Scottish noblewoman best known as the mother of King Robert the Bruce and a key figure in the lineage of the Scottish royal house.
• 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: Joan Mortimer
Triple: [Roger Mortimer, 1st Earl of March, child, Joan Mortimer]

Joan Mortimer was a 14th-century English noblewoman of the powerful Mortimer family, notable primarily through her lineage as the daughter of Roger Mortimer, 1st Earl of March.

Target entity: Joan Mortimer
Target entity description: Joan Mortimer was a 14th-century English noblewoman of the powerful Mortimer family, notable primarily through her lineage as the daughter of Roger Mortimer, 1st Earl of March.

• A. Mary Stewart, Countess of Angus
  Mary Stewart, Countess of Angus, was a medieval Scottish noblewoman and daughter of King Robert III of Scotland who played a role in the dynastic alliances of the Scottish royal family.
• B. Elizabeth Douglas, Countess of Morton
  Elizabeth Douglas, Countess of Morton, was a Scottish noblewoman of the powerful Douglas family who became Countess of Morton through her marriage to James Douglas, 4th Earl of Morton, a prominent 16th-century Scottish regent.
• C. Margaret Mortimer
  Margaret Mortimer was a medieval English noblewoman of the powerful Mortimer family, daughter of Roger Mortimer, 1st Earl of March, and a figure in the aristocratic networks surrounding the reign of Edward II and Edward III.
• D. Katherine Mortimer
  Katherine Mortimer was a 14th-century English noblewoman, daughter of the powerful Marcher lord Roger Mortimer, 1st Earl of March, and a member of the influential Mortimer family during the reign of Edward III.
• E. Marjorie, Countess of Carrick
  Marjorie, Countess of Carrick, was a 13th-century Scottish noblewoman best known as the mother of King Robert the Bruce and a key figure in the lineage of the Scottish royal house.
• F. None of above. chosen