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: 1866 National Union Convention | Statement: [Presidency of Andrew Johnson, keyEvent, 1866 National Union Convention]

Target entity: 1866 National Union Convention
Context triple: [Presidency of Andrew Johnson, keyEvent, 1866 National Union Convention]

• A. 1860 Republican National Convention
  The 1860 Republican National Convention was the party gathering in Chicago where Abraham Lincoln secured the presidential nomination that would propel him to the White House on the eve of the American Civil War.
• B. 1876 Republican National Convention
  The 1876 Republican National Convention was the party gathering in Cincinnati where Rutherford B. Hayes was nominated for president in a highly contested election year.
• C. 1880 Republican National Convention
  The 1880 Republican National Convention was the party gathering in Chicago where James A. Garfield emerged as a dark-horse presidential nominee after a prolonged deadlock between leading factions.
• D. 1884 Republican National Convention
  The 1884 Republican National Convention was the party gathering in Chicago where James G. Blaine was nominated for President of the United States.
• E. 1896 Democratic National Convention
  The 1896 Democratic National Convention was a pivotal U.S. political gathering in Chicago where the Democratic Party nominated William Jennings Bryan for president and dramatically embraced a pro–silver, anti–gold standard platform.
• 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: 1866 National Union Convention
Triple: [Presidency of Andrew Johnson, keyEvent, 1866 National Union Convention]

The 1866 National Union Convention was a political gathering in Philadelphia that sought to build a broad coalition in support of President Andrew Johnson’s lenient Reconstruction policies after the Civil War.

Target entity: 1866 National Union Convention
Target entity description: The 1866 National Union Convention was a political gathering in Philadelphia that sought to build a broad coalition in support of President Andrew Johnson’s lenient Reconstruction policies after the Civil War.

• A. 1860 Republican National Convention
  The 1860 Republican National Convention was the party gathering in Chicago where Abraham Lincoln secured the presidential nomination that would propel him to the White House on the eve of the American Civil War.
• B. 1876 Republican National Convention
  The 1876 Republican National Convention was the party gathering in Cincinnati where Rutherford B. Hayes was nominated for president in a highly contested election year.
• C. 1880 Republican National Convention
  The 1880 Republican National Convention was the party gathering in Chicago where James A. Garfield emerged as a dark-horse presidential nominee after a prolonged deadlock between leading factions.
• D. 1884 Republican National Convention
  The 1884 Republican National Convention was the party gathering in Chicago where James G. Blaine was nominated for President of the United States.
• E. 1896 Democratic National Convention
  The 1896 Democratic National Convention was a pivotal U.S. political gathering in Chicago where the Democratic Party nominated William Jennings Bryan for president and dramatically embraced a pro–silver, anti–gold standard platform.
• F. None of above. chosen