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: Lady Mary Gascoyne-Cecil | Statement: [William Cavendish, Marquess of Hartington, mother, Lady Mary Gascoyne-Cecil]

Target entity: Lady Mary Gascoyne-Cecil
Context triple: [William Cavendish, Marquess of Hartington, mother, Lady Mary Gascoyne-Cecil]

• A. Kathleen Cavendish, Marchioness of Hartington
  Kathleen Cavendish, Marchioness of Hartington was an American socialite and member of the Kennedy family who married into the British aristocracy and died tragically in a 1948 plane crash.
• B. Deborah Cavendish, Duchess of Devonshire
  Deborah Cavendish, Duchess of Devonshire was a British aristocrat, writer, and renowned chatelaine of Chatsworth House, celebrated for transforming the estate into a major cultural and tourist destination.
• C. Viscountess Pitt
  Viscountess Pitt is the female noble title corresponding to a viscount in the Pitt family, typically held by the wife or a woman of equivalent rank.
• D. Charlotte Stanhope
  Charlotte Stanhope is a clever, manipulative young woman in Anthony Trollope’s novel "Barchester Towers," known for her scheming involvement in the social and romantic intrigues of Barchester society.
• E. Frances Russell, Countess Russell
  Frances Russell, Countess Russell, was a prominent 19th-century British aristocrat and social reformer, best known as the wife of Prime Minister John Russell, 1st Earl Russell, and a leading figure in liberal and humanitarian causes.
• 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: Lady Mary Gascoyne-Cecil
Triple: [William Cavendish, Marquess of Hartington, mother, Lady Mary Gascoyne-Cecil]

Lady Mary Gascoyne-Cecil was an English aristocrat from the influential Cecil family who became Marchioness of Hartington through marriage into the Cavendish (Duke of Devonshire) family.

Target entity: Lady Mary Gascoyne-Cecil
Target entity description: Lady Mary Gascoyne-Cecil was an English aristocrat from the influential Cecil family who became Marchioness of Hartington through marriage into the Cavendish (Duke of Devonshire) family.

• A. Kathleen Cavendish, Marchioness of Hartington
  Kathleen Cavendish, Marchioness of Hartington was an American socialite and member of the Kennedy family who married into the British aristocracy and died tragically in a 1948 plane crash.
• B. Deborah Cavendish, Duchess of Devonshire
  Deborah Cavendish, Duchess of Devonshire was a British aristocrat, writer, and renowned chatelaine of Chatsworth House, celebrated for transforming the estate into a major cultural and tourist destination.
• C. Viscountess Pitt
  Viscountess Pitt is the female noble title corresponding to a viscount in the Pitt family, typically held by the wife or a woman of equivalent rank.
• D. Charlotte Stanhope
  Charlotte Stanhope is a clever, manipulative young woman in Anthony Trollope’s novel "Barchester Towers," known for her scheming involvement in the social and romantic intrigues of Barchester society.
• E. Frances Russell, Countess Russell
  Frances Russell, Countess Russell, was a prominent 19th-century British aristocrat and social reformer, best known as the wife of Prime Minister John Russell, 1st Earl Russell, and a leading figure in liberal and humanitarian causes.
• F. None of above. chosen