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: Army of the Potomac (Confederate) units under Nathan G. Evans | Statement: [Battle of Ball's Bluff, ConfederateForces, Army of the Potomac (Confederate) units under Nathan G. Evans]

Target entity: Army of the Potomac (Confederate) units under Nathan G. Evans
Context triple: [Battle of Ball's Bluff, ConfederateForces, Army of the Potomac (Confederate) units under Nathan G. Evans]

• A. Union Army of Northeastern Virginia
  The Union Army of Northeastern Virginia was the primary Federal field army in the Eastern Theater at the outset of the American Civil War, best known for its role in the First Battle of Bull Run in 1861.
• B. Army of the Shenandoah (Confederate)
  The Army of the Shenandoah (Confederate) was an early Confederate field army operating in the strategically vital Shenandoah Valley of Virginia during the opening phase of the American Civil War.
• C. Stonewall Brigade
  The Stonewall Brigade was a famed Confederate infantry brigade in the American Civil War, originally commanded by Thomas “Stonewall” Jackson and renowned for its discipline and combat effectiveness.
• D. Kemper’s Brigade
  Kemper’s Brigade was a Confederate infantry brigade in the Army of Northern Virginia, best known for its role in Pickett’s Charge during the Battle of Gettysburg.
• E. Sibley’s Brigade
  Sibley’s Brigade was a Confederate volunteer brigade led by Colonel Henry Hopkins Sibley that campaigned in the New Mexico Territory during the American Civil War.
• 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: Army of the Potomac (Confederate) units under Nathan G. Evans
Triple: [Battle of Ball's Bluff, ConfederateForces, Army of the Potomac (Confederate) units under Nathan G. Evans]

The Army of the Potomac (Confederate) units under Nathan G. Evans were a small Confederate command that played a key defensive role against Union forces during the Battle of Ball's Bluff in the American Civil War.

Target entity: Army of the Potomac (Confederate) units under Nathan G. Evans
Target entity description: The Army of the Potomac (Confederate) units under Nathan G. Evans were a small Confederate command that played a key defensive role against Union forces during the Battle of Ball's Bluff in the American Civil War.

• A. Union Army of Northeastern Virginia
  The Union Army of Northeastern Virginia was the primary Federal field army in the Eastern Theater at the outset of the American Civil War, best known for its role in the First Battle of Bull Run in 1861.
• B. Army of the Shenandoah (Confederate)
  The Army of the Shenandoah (Confederate) was an early Confederate field army operating in the strategically vital Shenandoah Valley of Virginia during the opening phase of the American Civil War.
• C. Stonewall Brigade
  The Stonewall Brigade was a famed Confederate infantry brigade in the American Civil War, originally commanded by Thomas “Stonewall” Jackson and renowned for its discipline and combat effectiveness.
• D. Kemper’s Brigade
  Kemper’s Brigade was a Confederate infantry brigade in the Army of Northern Virginia, best known for its role in Pickett’s Charge during the Battle of Gettysburg.
• E. Sibley’s Brigade
  Sibley’s Brigade was a Confederate volunteer brigade led by Colonel Henry Hopkins Sibley that campaigned in the New Mexico Territory during the American Civil War.
• F. None of above. chosen

Target predicate: ConfederateForces
Context triple: [Battle of Ball's Bluff, ConfederateForces, Army of the Potomac (Confederate) units under Nathan G. Evans]

• A. unionArmy
  Indicates that an entity served in, was part of, or is otherwise affiliated with the Union Army (the United States Army of the North) during the American Civil War.
• B. commandingConfederateForces
  Indicates that one entity holds the role or responsibility of directing and leading the military operations of the Confederate forces in relation to another entity.
• C. confederateArmyComponent chosen
  Indicates that one entity functions as a constituent unit, formation, or subpart of the Confederate army.
• D. joinedConfederateStatesOfAmerica
  Indicates that an entity became a member of, or formally aligned itself with, the Confederate States of America.
• E. combatantConfederate
  Indicates that an entity participates as a combatant on the Confederate side in a conflict or war.
• F. None of above.