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: Margaret Mortimer, Baroness Berkeley | Statement: [Katherine Mortimer, sibling, Margaret Mortimer, Baroness Berkeley]

Target entity: Margaret Mortimer, Baroness Berkeley
Context triple: [Katherine Mortimer, sibling, Margaret Mortimer, Baroness Berkeley]

• A. Lady Margaret Butler
  Lady Margaret Butler was an Irish noblewoman of the Butler family who, through her son Thomas Boleyn, became the grandmother of Anne Boleyn and great-grandmother of Queen Elizabeth I of England.
• B. Margaret Stanley
  Margaret Stanley was an English noblewoman of the late 15th and early 16th centuries, notable as a member of the influential Stanley family during the Tudor period.
• C. Lady Margaret Sackville
  Lady Margaret Sackville was an English noblewoman of the early 18th century, notable as the daughter of Elizabeth Colyear and a member of the influential Sackville family.
• D. 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.
• E. Anne Carr, Countess of Bedford
  Anne Carr, Countess of Bedford was a 17th-century English noblewoman, daughter of the royal favorite Robert Carr, Earl of Somerset, and wife of William Russell, 1st Earl of Bedford.
• 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: Margaret Mortimer, Baroness Berkeley
Triple: [Katherine Mortimer, sibling, Margaret Mortimer, Baroness Berkeley]

Margaret Mortimer, Baroness Berkeley was a 14th-century English noblewoman of the powerful Mortimer family who became Baroness Berkeley through marriage into the influential Berkeley dynasty.

Target entity: Margaret Mortimer, Baroness Berkeley
Target entity description: Margaret Mortimer, Baroness Berkeley was a 14th-century English noblewoman of the powerful Mortimer family who became Baroness Berkeley through marriage into the influential Berkeley dynasty.

• A. Lady Margaret Butler
  Lady Margaret Butler was an Irish noblewoman of the Butler family who, through her son Thomas Boleyn, became the grandmother of Anne Boleyn and great-grandmother of Queen Elizabeth I of England.
• B. Margaret Stanley
  Margaret Stanley was an English noblewoman of the late 15th and early 16th centuries, notable as a member of the influential Stanley family during the Tudor period.
• C. Lady Margaret Sackville
  Lady Margaret Sackville was an English noblewoman of the early 18th century, notable as the daughter of Elizabeth Colyear and a member of the influential Sackville family.
• D. 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.
• E. Anne Carr, Countess of Bedford
  Anne Carr, Countess of Bedford was a 17th-century English noblewoman, daughter of the royal favorite Robert Carr, Earl of Somerset, and wife of William Russell, 1st Earl of Bedford.
• F. None of above. chosen