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: 509th Bombardment Group | Statement: [509th Composite Group, subsequentDesignation, 509th Bombardment Group]

Target entity: 509th Bombardment Group
Context triple: [509th Composite Group, subsequentDesignation, 509th Bombardment Group]

• A. 97th Bombardment Group
  The 97th Bombardment Group was a U.S. Army Air Forces unit in World War II, notable as one of the first American heavy bomber groups to operate in the European Theater.
• B. 509th Composite Group chosen
  The 509th Composite Group was the U.S. Army Air Forces unit specially formed during World War II to conduct atomic bomb missions, including the deployment of the "Fat Man" bomb over Nagasaki.
• C. 393d Bombardment Squadron
  The 393d Bombardment Squadron was a U.S. Army Air Forces unit best known for flying the B-29 bombers that carried out the atomic bombings of Hiroshima and Nagasaki during World War II.
• D. 23rd Fighter Group
  The 23rd Fighter Group is a United States Army Air Forces unit formed in World War II that carried on the legacy and traditions of the famed Flying Tigers in the China-Burma-India theater.
• E. 390th Air Service Group
  The 390th Air Service Group was a United States Army Air Forces support unit in World War II that provided maintenance, supply, and service functions for the 509th Composite Group, the unit that carried out the atomic bomb missions over Japan.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target predicate: subsequentDesignation
Context triple: [509th Composite Group, subsequentDesignation, 509th Bombardment Group]

• A. successorDesignated
  Indicates that one entity has been formally chosen or named to take over the role, position, or responsibilities of another entity in the future.
• B. formerDesignation
  Indicates that an entity previously held a particular title, role, or designation that it no longer holds.
• C. successorDesignationFor
  Indicates the designation or identification of an entity that is intended to succeed or replace another entity in a given role, position, or function.
• D. previousDesignationEstablished
  Indicates that an earlier official designation or title for an entity was formally created or put into effect.
• E. derivativeDesignation
  Indicates that one entity is formally identified as a derivative or adapted version of another entity.
• F. None of above. chosen