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: Jack McCain | Statement: [John Sidney McCain IV, sibling, Jack McCain]

Target entity: Jack McCain
Context triple: [John Sidney McCain IV, sibling, Jack McCain]

• A. James McCain
  James McCain is one of the children of the late U.S. Senator and 2008 Republican presidential nominee John McCain.
• B. John Sidney McCain IV
  John Sidney McCain IV is the son of the late U.S. Senator and 2008 Republican presidential nominee John McCain, known primarily as a member of the prominent McCain political family.
• C. John McCain
  John McCain was a long-serving Republican U.S. senator from Arizona and Vietnam War veteran who became his party’s nominee for president in 2008.
• D. Mark McCain
  Mark McCain is the young son of rancher Lucas McCain and a central figure in the classic American Western television series "The Rifleman," known for his close father-son relationship and coming-of-age storylines.
• E. John S. McCain Sr.
  John S. McCain Sr. was a U.S. Navy admiral and World War II carrier task force commander who played a key role in Pacific theater operations.
• 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: Jack McCain
Triple: [John Sidney McCain IV, sibling, Jack McCain]

Jack McCain is an American naval aviator and public figure, known as one of the sons of the late U.S. Senator and former presidential candidate John McCain.

Target entity: Jack McCain
Target entity description: Jack McCain is an American naval aviator and public figure, known as one of the sons of the late U.S. Senator and former presidential candidate John McCain.

• A. James McCain
  James McCain is one of the children of the late U.S. Senator and 2008 Republican presidential nominee John McCain.
• B. John Sidney McCain IV chosen
  John Sidney McCain IV is the son of the late U.S. Senator and 2008 Republican presidential nominee John McCain, known primarily as a member of the prominent McCain political family.
• C. John McCain
  John McCain was a long-serving Republican U.S. senator from Arizona and Vietnam War veteran who became his party’s nominee for president in 2008.
• D. Mark McCain
  Mark McCain is the young son of rancher Lucas McCain and a central figure in the classic American Western television series "The Rifleman," known for his close father-son relationship and coming-of-age storylines.
• E. John S. McCain Sr.
  John S. McCain Sr. was a U.S. Navy admiral and World War II carrier task force commander who played a key role in Pacific theater operations.
• F. None of above.