Triple

Target class: Confederate States Army cavalry regiment
Context triple: [13th Virginia Cavalry Regiment, instanceOf, Confederate States Army cavalry regiment]

• A. Confederate States Army unit chosen
  A Confederate States Army unit is an organized military formation, such as a regiment, battalion, or company, that served under the Confederate States of America during the American Civil War.
• B. branch of the Confederate States Army
  A branch of the Confederate States Army is a major functional subdivision, such as infantry, cavalry, or artillery, responsible for a specific type of military operation within the Confederate land forces during the American Civil War.
• C. U.S. Army cavalry squadron
  A U.S. Army cavalry squadron is a battalion-sized, highly mobile combat unit organized to conduct reconnaissance, security, and offensive operations in support of larger maneuver formations.
• D. Canadian Army cavalry regiment
  A Canadian Army cavalry regiment is a military unit historically composed of mounted soldiers and now typically equipped with armored vehicles, responsible for reconnaissance, security, and mobile combat operations.
• E. U.S. Army regiment
  A U.S. Army regiment is a traditional military unit designation that historically grouped multiple battalions or companies under a common lineage and identity, now used primarily for organizational, administrative, and ceremonial purposes rather than as a primary tactical formation.
• F. None of above.