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: Joseph B. Keenan | Statement: [International Military Tribunal for the Far East, chiefProsecutor, Joseph B. Keenan]

Target entity: Joseph B. Keenan
Context triple: [International Military Tribunal for the Far East, chiefProsecutor, Joseph B. Keenan]

• A. James E. Casey
  James E. Casey was an American businessman and philanthropist best known for co-founding United Parcel Service (UPS) and shaping it into a global package delivery giant.
• B. Arthur E. Molloy
  Arthur E. Molloy was an individual significant enough in marine or exploratory history to have the undersea feature Molloy Deep named in his honor.
• C. Patrick E. Haggerty
  Patrick E. Haggerty was an American engineer and business executive who played a pivotal role in the early semiconductor industry and the growth of Texas Instruments into a major technology company.
• D. James L. Buckley
  James L. Buckley was an American conservative politician, jurist, and author who served as a U.S. Senator from New York and later as a federal appellate judge.
• E. George H. Fallon
  George H. Fallon was a U.S. Congressman from Maryland known for his influential role in shaping national transportation policy, including major federal highway legislation.
• 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: Joseph B. Keenan
Triple: [International Military Tribunal for the Far East, chiefProsecutor, Joseph B. Keenan]

Joseph B. Keenan was an American lawyer and U.S. Assistant Attorney General who served as the chief prosecutor in the post–World War II Tokyo war crimes trials.

Target entity: Joseph B. Keenan
Target entity description: Joseph B. Keenan was an American lawyer and U.S. Assistant Attorney General who served as the chief prosecutor in the post–World War II Tokyo war crimes trials.

• A. James E. Casey
  James E. Casey was an American businessman and philanthropist best known for co-founding United Parcel Service (UPS) and shaping it into a global package delivery giant.
• B. Arthur E. Molloy
  Arthur E. Molloy was an individual significant enough in marine or exploratory history to have the undersea feature Molloy Deep named in his honor.
• C. Patrick E. Haggerty
  Patrick E. Haggerty was an American engineer and business executive who played a pivotal role in the early semiconductor industry and the growth of Texas Instruments into a major technology company.
• D. James L. Buckley
  James L. Buckley was an American conservative politician, jurist, and author who served as a U.S. Senator from New York and later as a federal appellate judge.
• E. George H. Fallon
  George H. Fallon was a U.S. Congressman from Maryland known for his influential role in shaping national transportation policy, including major federal highway legislation.
• F. None of above. chosen

Target predicate: chiefProsecutor
Context triple: [International Military Tribunal for the Far East, chiefProsecutor, Joseph B. Keenan]

• A. notableProsecutor
  Indicates that the person served as a prosecutor in a way that is widely recognized as significant or noteworthy.
• B. prosecutingAuthority chosen
  Indicates that an entity serves as the official body responsible for bringing and conducting legal proceedings against another party in a criminal or regulatory case.
• C. subjectOfProsecution
  Indicates that an entity is the target or focus of a legal prosecution or criminal proceeding initiated by an authority.
• D. chiefBritishNegotiator
  Indicates that the subject serves as the primary British representative responsible for conducting negotiations with the object.
• E. hasChiefJudge
  Indicates that an entity holds the role or position of chief judge for another entity (such as a court or judicial body).
• F. None of above.