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: United States Ambassador-at-Large | Statement: [Vernon A. Walters, positionHeld, United States Ambassador-at-Large]

Target entity: United States Ambassador-at-Large
Context triple: [Vernon A. Walters, positionHeld, United States Ambassador-at-Large]

• A. Special Envoy of the President of the United States
  The Special Envoy of the President of the United States is a high-level diplomatic representative appointed by the president to handle specific foreign policy missions or negotiations outside the regular ambassadorial framework.
• B. Under Secretary of State for Civilian Security, Democracy, and Human Rights
  The Under Secretary of State for Civilian Security, Democracy, and Human Rights is a senior U.S. State Department official responsible for overseeing policies and programs that promote civilian security, democratic governance, and the protection of human rights worldwide.
• C. Assistant Secretary of State for International Organization Affairs
  The Assistant Secretary of State for International Organization Affairs is a senior U.S. State Department official responsible for overseeing U.S. policy and engagement with international organizations, particularly the United Nations and its affiliated bodies.
• D. United States Under Secretary of State
  The United States Under Secretary of State is a senior State Department official who serves as the principal deputy to the Secretary of State and helps oversee the formulation and implementation of U.S. foreign policy.
• E. Assistant Secretary of State for Public Affairs of the United States
  The Assistant Secretary of State for Public Affairs of the United States is a senior State Department official responsible for leading the department’s public communications, media relations, and strategic messaging on U.S. foreign policy.
• 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: United States Ambassador-at-Large
Triple: [Vernon A. Walters, positionHeld, United States Ambassador-at-Large]

The United States Ambassador-at-Large is a senior diplomatic official appointed to handle specialized foreign policy issues that span multiple countries or regions rather than being assigned to a single nation.

Target entity: United States Ambassador-at-Large
Target entity description: The United States Ambassador-at-Large is a senior diplomatic official appointed to handle specialized foreign policy issues that span multiple countries or regions rather than being assigned to a single nation.

• A. Special Envoy of the President of the United States
  The Special Envoy of the President of the United States is a high-level diplomatic representative appointed by the president to handle specific foreign policy missions or negotiations outside the regular ambassadorial framework.
• B. Under Secretary of State for Civilian Security, Democracy, and Human Rights
  The Under Secretary of State for Civilian Security, Democracy, and Human Rights is a senior U.S. State Department official responsible for overseeing policies and programs that promote civilian security, democratic governance, and the protection of human rights worldwide.
• C. Assistant Secretary of State for International Organization Affairs
  The Assistant Secretary of State for International Organization Affairs is a senior U.S. State Department official responsible for overseeing U.S. policy and engagement with international organizations, particularly the United Nations and its affiliated bodies.
• D. United States Under Secretary of State
  The United States Under Secretary of State is a senior State Department official who serves as the principal deputy to the Secretary of State and helps oversee the formulation and implementation of U.S. foreign policy.
• E. Assistant Secretary of State for Public Affairs of the United States
  The Assistant Secretary of State for Public Affairs of the United States is a senior State Department official responsible for leading the department’s public communications, media relations, and strategic messaging on U.S. foreign policy.
• F. None of above. chosen