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: 1st U.S. Volunteer Cavalry (Rough Riders) | Statement: [Battle of Las Guasimas, involvesUnit, 1st U.S. Volunteer Cavalry (Rough Riders)]

Target entity: 1st U.S. Volunteer Cavalry (Rough Riders)
Context triple: [Battle of Las Guasimas, involvesUnit, 1st U.S. Volunteer Cavalry (Rough Riders)]

• A. 1st United States Volunteer Cavalry chosen
  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.
• B. United States Cavalry
  The United States Cavalry was a historic mounted combat branch of the U.S. Army that played a key role in 19th- and early 20th-century American military campaigns, including the Indian Wars, the Civil War, and the Spanish–American War.
• C. 10th U.S. Cavalry Regiment
  The 10th U.S. Cavalry Regiment was one of the original African American "Buffalo Soldier" units in the U.S. Army, noted for its distinguished service in the Indian Wars and the Spanish–American War.
• D. 2nd U.S. Cavalry
  The 2nd U.S. Cavalry was a pre–Civil War Regular Army regiment that served on the American frontier and later fought for the Union in the American Civil War.
• E. Buffalo Soldiers
  The Buffalo Soldiers were African American regiments in the U.S. Army formed after the Civil War, renowned for their service on the Western frontier and in later American conflicts despite facing racial discrimination.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.