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: [William Marshal, 1st Earl of Pembroke, child, Walter Marshal, 5th Earl of Pembroke]

Target entity: Walter Marshal, 5th Earl of Pembroke
Context triple: [William Marshal, 1st Earl of Pembroke, child, Walter Marshal, 5th Earl of Pembroke]

• A. 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.
• B. 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.
• C. 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.
• D. Anselm Marshal, 6th Earl of Pembroke
  Anselm Marshal, 6th Earl of Pembroke, was a 13th-century Anglo-Norman nobleman and the youngest son of the famed knight William Marshal, whose brief tenure as earl marked the end of the male line of the Marshal dynasty.
• E. 1st Earl of Pembroke
  The 1st Earl of Pembroke was a prominent English noble title in the High Middle Ages, most famously held by the knight and statesman William Marshal, a key figure in the reigns of several Plantagenet kings.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: Walter Marshal, 5th Earl of Pembroke
Triple: [William Marshal, 1st Earl of Pembroke, child, Walter Marshal, 5th Earl of Pembroke]

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.

Target entity: Walter Marshal, 5th Earl of Pembroke
Target entity description: 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.

• A. 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.
• B. 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.
• C. 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.
• D. Anselm Marshal, 6th Earl of Pembroke
  Anselm Marshal, 6th Earl of Pembroke, was a 13th-century Anglo-Norman nobleman and the youngest son of the famed knight William Marshal, whose brief tenure as earl marked the end of the male line of the Marshal dynasty.
• E. 1st Earl of Pembroke
  The 1st Earl of Pembroke was a prominent English noble title in the High Middle Ages, most famously held by the knight and statesman William Marshal, a key figure in the reigns of several Plantagenet kings.
• F. None of above. chosen