Triple

Target entity: Richard, 1st Earl of Cornwall
Context triple: [Earl of Cornwall, notableHolder, Richard, 1st Earl of Cornwall]

• A. Richard, 1st Earl of Cornwall chosen
  Richard, 1st Earl of Cornwall was a 13th-century English prince, wealthy magnate, and elected King of the Romans who played a significant role in European politics during the reigns of his brother Henry III and beyond.
• B. John of Eltham, Earl of Cornwall
  John of Eltham, Earl of Cornwall, was a 14th-century English prince, the second son of King Edward II and Isabella of France, who played a notable military role in the early stages of the Hundred Years’ War before his early death.
• C. John of Cornwall
  John of Cornwall was a 13th-century English nobleman, the son of Richard, 1st Earl of Cornwall, and a member of the Plantagenet royal family.
• D. Reginald de Dunstanville, 1st Earl of Cornwall
  Reginald de Dunstanville, 1st Earl of Cornwall, was a 12th-century Anglo-Norman nobleman and illegitimate son of King Henry I of England who became a prominent regional magnate and royal supporter during the civil war known as The Anarchy.
• E. Henry of Courtenay
  Henry of Courtenay was a lesser-known medieval French nobleman of the Capetian House of Courtenay, notable primarily as a son of Peter II of Courtenay, Latin Emperor of Constantinople.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.