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: Mary of Scotland, Countess of Buchan | Statement: [Annabella Stewart, sibling, Mary of Scotland, Countess of Buchan]

Target entity: Mary of Scotland, Countess of Buchan
Context triple: [Annabella Stewart, sibling, Mary of Scotland, Countess of Buchan]

• A. Joan of Scotland, Countess of Morton
  Joan of Scotland, Countess of Morton, was a 15th-century Scottish princess, daughter of King James I of Scotland, who became Countess of Morton through marriage into the Douglas family.
• B. Margaret Stewart, Princess of Scotland
  Margaret Stewart, Princess of Scotland, was a 15th-century Scottish royal princess of the House of Stewart and daughter of King James II of Scotland.
• C. Margaret Stewart, Countess of Angus
  Margaret Stewart, Countess of Angus, was a prominent 15th-century Scottish noblewoman of the Stewart family who held the Angus title in her own right and was the mother of James Douglas, 7th Earl of Douglas.
• D. Margaret Stewart of Galloway
  Margaret Stewart of Galloway was a 13th-century Scottish noblewoman of the influential Stewart family and the mother of Marjorie, Countess of Carrick, linking her to the ancestry of Robert the Bruce.
• E. Margaret Stewart, Countess of Mar
  Margaret Stewart, Countess of Mar, was a 14th-century Scottish noblewoman who held the ancient earldom of Mar in her own right and played a notable role in the politics of medieval Scotland.
• 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: Mary of Scotland, Countess of Buchan
Triple: [Annabella Stewart, sibling, Mary of Scotland, Countess of Buchan]

Mary of Scotland, Countess of Buchan, was a 15th-century Scottish princess of the Stewart dynasty who became Countess of Buchan through marriage and was a daughter of King Robert III of Scotland.

Target entity: Mary of Scotland, Countess of Buchan
Target entity description: Mary of Scotland, Countess of Buchan, was a 15th-century Scottish princess of the Stewart dynasty who became Countess of Buchan through marriage and was a daughter of King Robert III of Scotland.

• A. Joan of Scotland, Countess of Morton
  Joan of Scotland, Countess of Morton, was a 15th-century Scottish princess, daughter of King James I of Scotland, who became Countess of Morton through marriage into the Douglas family.
• B. Margaret Stewart, Princess of Scotland
  Margaret Stewart, Princess of Scotland, was a 15th-century Scottish royal princess of the House of Stewart and daughter of King James II of Scotland.
• C. Margaret Stewart, Countess of Angus
  Margaret Stewart, Countess of Angus, was a prominent 15th-century Scottish noblewoman of the Stewart family who held the Angus title in her own right and was the mother of James Douglas, 7th Earl of Douglas.
• D. Margaret Stewart of Galloway
  Margaret Stewart of Galloway was a 13th-century Scottish noblewoman of the influential Stewart family and the mother of Marjorie, Countess of Carrick, linking her to the ancestry of Robert the Bruce.
• E. Margaret Stewart, Countess of Mar
  Margaret Stewart, Countess of Mar, was a 14th-century Scottish noblewoman who held the ancient earldom of Mar in her own right and played a notable role in the politics of medieval Scotland.
• F. None of above. chosen