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: Mattie Moss Clark | Statement: [The Clark Sisters: First Ladies of Gospel, portrays, Mattie Moss Clark]

Target entity: Mattie Moss Clark
Context triple: [The Clark Sisters: First Ladies of Gospel, portrays, Mattie Moss Clark]

• A. Ida Mae Richardson Cox
  Ida Mae Richardson Cox was the wife of pioneering American mathematician Elbert Frank Cox, the first Black person in the world to earn a Ph.D. in mathematics.
• B. Ida Marie Honoré Grant
  Ida Marie Honoré Grant was an American socialite and the wife of Frederick Dent Grant, making her the daughter-in-law of U.S. President Ulysses S. Grant.
• C. Lula Carson Smith
  Lula Carson Smith, better known as Carson McCullers, was an American novelist, short story writer, and playwright renowned for her explorations of loneliness and the human condition in the American South.
• D. Helen Hardin Jackson
  Helen Hardin Jackson was the wife of longtime U.S. Senator Henry M. "Scoop" Jackson and a prominent figure in Washington state political and civic circles.
• E. Mary Ricketts
  Mary Ricketts was a British noblewoman best known as the wife of William Carnegie, 7th Earl of Northesk, a distinguished Royal Navy officer and peer.
• 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: Mattie Moss Clark
Triple: [The Clark Sisters: First Ladies of Gospel, portrays, Mattie Moss Clark]

Mattie Moss Clark was a pioneering American gospel choir director, arranger, and songwriter, best known for revolutionizing church choir music and as the matriarch of the famed Clark Sisters.

Target entity: Mattie Moss Clark
Target entity description: Mattie Moss Clark was a pioneering American gospel choir director, arranger, and songwriter, best known for revolutionizing church choir music and as the matriarch of the famed Clark Sisters.

• A. Ida Mae Richardson Cox
  Ida Mae Richardson Cox was the wife of pioneering American mathematician Elbert Frank Cox, the first Black person in the world to earn a Ph.D. in mathematics.
• B. Ida Marie Honoré Grant
  Ida Marie Honoré Grant was an American socialite and the wife of Frederick Dent Grant, making her the daughter-in-law of U.S. President Ulysses S. Grant.
• C. Lula Carson Smith
  Lula Carson Smith, better known as Carson McCullers, was an American novelist, short story writer, and playwright renowned for her explorations of loneliness and the human condition in the American South.
• D. Helen Hardin Jackson
  Helen Hardin Jackson was the wife of longtime U.S. Senator Henry M. "Scoop" Jackson and a prominent figure in Washington state political and civic circles.
• E. Mary Ricketts
  Mary Ricketts was a British noblewoman best known as the wife of William Carnegie, 7th Earl of Northesk, a distinguished Royal Navy officer and peer.
• F. None of above. chosen