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: Colorado U.S. Volunteer Cavalry | Statement: [White Antelope, opponent, Colorado U.S. Volunteer Cavalry]

Target entity: Colorado U.S. Volunteer Cavalry
Context triple: [White Antelope, opponent, Colorado U.S. Volunteer Cavalry]

• A. Third Colorado Cavalry Regiment chosen
  The Third Colorado Cavalry Regiment was a short-lived volunteer unit formed in 1864 in the Colorado Territory, notorious for its role in the Sand Creek Massacre during the American Civil War.
• B. United States Army 7th Cavalry Regiment
  The United States Army 7th Cavalry Regiment is a historic cavalry unit best known for its role in the Indian Wars, including the Battle of the Little Bighorn and the Wounded Knee Massacre, and later service in major 20th- and 21st-century conflicts.
• C. 1st United States Volunteer Cavalry
  The 1st United States Volunteer Cavalry, famously known as the "Rough Riders," was a volunteer regiment led by Theodore Roosevelt during the Spanish–American War.
• D. First Colorado Cavalry Regiment
  The First Colorado Cavalry Regiment was a Union volunteer cavalry unit from the Colorado Territory that served on the Western frontier during the American Civil War, engaging in campaigns against Confederate forces and Native American tribes.
• E. Sixth Cavalry Regiment
  The Sixth Cavalry Regiment is a historic U.S. Army cavalry unit known for its active service in the Indian Wars and later conflicts.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.