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: John Mercer Langston | Statement: [Woodlawn Cemetery (Washington, D.C.), hasBurial, John Mercer Langston]

Target entity: John Mercer Langston
Context triple: [Woodlawn Cemetery (Washington, D.C.), hasBurial, John Mercer Langston]

• A. Charles Remond Douglass
  Charles Remond Douglass was an African American civil rights activist, soldier, and government clerk, and the youngest son of abolitionist Frederick Douglass.
• B. Lewis Henry Douglass
  Lewis Henry Douglass was the eldest son of abolitionist Frederick Douglass, known for his service as a Union soldier in the Civil War and his work as a typesetter and activist in Washington, D.C.
• C. Henry Chandlee Turner
  Henry Chandlee Turner was an American builder and entrepreneur best known as the founder of the major construction firm Turner Construction Company.
• D. Sumner W. Jackson
  Sumner W. Jackson was an American physician and U.S. Army officer in Paris during World War II who became known for aiding the French Resistance and was ultimately killed in a Nazi concentration camp.
• E. J. Parnell Thomas
  J. Parnell Thomas was a conservative Republican congressman from New Jersey best known for chairing the House Un-American Activities Committee during the early Cold War era.
• 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: John Mercer Langston
Triple: [Woodlawn Cemetery (Washington, D.C.), hasBurial, John Mercer Langston]

John Mercer Langston was a pioneering African American abolitionist, lawyer, educator, and politician who became one of the first Black men elected to public office in the United States and served as a U.S. congressman from Virginia.

Target entity: John Mercer Langston
Target entity description: John Mercer Langston was a pioneering African American abolitionist, lawyer, educator, and politician who became one of the first Black men elected to public office in the United States and served as a U.S. congressman from Virginia.

• A. Charles Remond Douglass
  Charles Remond Douglass was an African American civil rights activist, soldier, and government clerk, and the youngest son of abolitionist Frederick Douglass.
• B. Lewis Henry Douglass
  Lewis Henry Douglass was the eldest son of abolitionist Frederick Douglass, known for his service as a Union soldier in the Civil War and his work as a typesetter and activist in Washington, D.C.
• C. Henry Chandlee Turner
  Henry Chandlee Turner was an American builder and entrepreneur best known as the founder of the major construction firm Turner Construction Company.
• D. Sumner W. Jackson
  Sumner W. Jackson was an American physician and U.S. Army officer in Paris during World War II who became known for aiding the French Resistance and was ultimately killed in a Nazi concentration camp.
• E. J. Parnell Thomas
  J. Parnell Thomas was a conservative Republican congressman from New Jersey best known for chairing the House Un-American Activities Committee during the early Cold War era.
• F. None of above. chosen