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: Walter Marshal, 5th Earl of Pembroke | Statement: [Sibyl Marshal, sibling, Walter Marshal, 5th Earl of Pembroke]

Target entity: Walter Marshal, 5th Earl of Pembroke
Context triple: [Sibyl Marshal, sibling, Walter Marshal, 5th Earl of Pembroke]

• A. Walter Marshal, 5th Earl of Pembroke chosen
  Walter Marshal, 5th Earl of Pembroke, was a 13th-century Anglo-Norman nobleman and magnate who briefly held the powerful Pembroke earldom as one of the sons and successors of the famed knight William Marshal.
• B. Gilbert Marshal, 4th Earl of Pembroke
  Gilbert Marshal, 4th Earl of Pembroke, was a 13th-century Anglo-Norman nobleman and magnate who briefly held the powerful Pembroke earldom as one of the sons and successors of the famed knight William Marshal.
• C. William de Valence, 1st Earl of Pembroke
  William de Valence, 1st Earl of Pembroke, was a prominent 13th-century Anglo-French nobleman and half-brother of King Henry III who became a powerful marcher lord in Wales and a key figure in the politics of medieval England.
• D. Richard Marshal, 3rd Earl of Pembroke
  Richard Marshal, 3rd Earl of Pembroke, was a prominent 13th-century Anglo-Norman nobleman and military leader who became one of the most powerful magnates in England and Ireland and famously rebelled against King Henry III.
• E. John Hastings, 2nd Earl of Pembroke
  John Hastings, 2nd Earl of Pembroke, was a 14th-century English nobleman and military commander who played a prominent role in the early stages of the Hundred Years' War.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.