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: Elizabeth Cosby | Statement: [The Duke of Grafton, mother, Elizabeth Cosby]

Target entity: Elizabeth Cosby
Context triple: [The Duke of Grafton, mother, Elizabeth Cosby]

• A. Rachel Marron
  Rachel Marron is a famous pop singer and actress who becomes the client and love interest of a former Secret Service agent in the romantic thriller film "The Bodyguard."
• B. Katherine Rogers
  Katherine Rogers was the mother of John Harvard, the English clergyman whose bequest helped found Harvard College in colonial Massachusetts.
• C. Katherine Puening
  Katherine Puening, better known as Kitty Oppenheimer, was a German-born American biologist and former Communist Party member who became the wife and close confidante of physicist J. Robert Oppenheimer.
• D. Lisa Rogers
  Lisa Rogers is a member of the Rogers family, known as the daughter of Canadian businessman and media magnate Ted Rogers.
• E. Cathy Ferguson
  Cathy Ferguson is the wife of legendary Scottish football manager Sir Alex Ferguson and is known for her long-standing support throughout his career.
• 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: Elizabeth Cosby
Triple: [The Duke of Grafton, mother, Elizabeth Cosby]

Elizabeth Cosby was an 18th-century English noblewoman best known as the mother of Augustus FitzRoy, 3rd Duke of Grafton and British Prime Minister.

Target entity: Elizabeth Cosby
Target entity description: Elizabeth Cosby was an 18th-century English noblewoman best known as the mother of Augustus FitzRoy, 3rd Duke of Grafton and British Prime Minister.

• A. Rachel Marron
  Rachel Marron is a famous pop singer and actress who becomes the client and love interest of a former Secret Service agent in the romantic thriller film "The Bodyguard."
• B. Katherine Rogers
  Katherine Rogers was the mother of John Harvard, the English clergyman whose bequest helped found Harvard College in colonial Massachusetts.
• C. Katherine Puening
  Katherine Puening, better known as Kitty Oppenheimer, was a German-born American biologist and former Communist Party member who became the wife and close confidante of physicist J. Robert Oppenheimer.
• D. Lisa Rogers
  Lisa Rogers is a member of the Rogers family, known as the daughter of Canadian businessman and media magnate Ted Rogers.
• E. Cathy Ferguson
  Cathy Ferguson is the wife of legendary Scottish football manager Sir Alex Ferguson and is known for her long-standing support throughout his career.
• F. None of above. chosen