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: Edmund Mortimer, 2nd Baron Mortimer | Statement: [Roger Mortimer, 1st Earl of March, father, Edmund Mortimer, 2nd Baron Mortimer]

Target entity: Edmund Mortimer, 2nd Baron Mortimer
Context triple: [Roger Mortimer, 1st Earl of March, father, Edmund Mortimer, 2nd Baron Mortimer]

• A. Roger Mortimer, 1st Earl of March
  Roger Mortimer, 1st Earl of March, was a powerful 14th-century English nobleman who led the rebellion against King Edward II and effectively ruled England during the early reign of Edward III before being overthrown and executed.
• B. Baron Mortimer of Wigmore
  Baron Mortimer of Wigmore was a prominent medieval English baronial title held by the powerful Mortimer family, whose members played key roles in the politics and conflicts of the Welsh Marches and the English crown.
• C. Thomas, 2nd Earl of Lancaster
  Thomas, 2nd Earl of Lancaster was a powerful English nobleman and cousin to King Edward II who led baronial opposition to the king and was eventually executed for his role in the rebellion.
• 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. 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.
• 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: Edmund Mortimer, 2nd Baron Mortimer
Triple: [Roger Mortimer, 1st Earl of March, father, Edmund Mortimer, 2nd Baron Mortimer]

Edmund Mortimer, 2nd Baron Mortimer, was a prominent 13th-century English nobleman and Marcher lord who expanded the Mortimer family’s power along the Welsh border through military service and strategic alliances.

Target entity: Edmund Mortimer, 2nd Baron Mortimer
Target entity description: Edmund Mortimer, 2nd Baron Mortimer, was a prominent 13th-century English nobleman and Marcher lord who expanded the Mortimer family’s power along the Welsh border through military service and strategic alliances.

• A. Roger Mortimer, 1st Earl of March
  Roger Mortimer, 1st Earl of March, was a powerful 14th-century English nobleman who led the rebellion against King Edward II and effectively ruled England during the early reign of Edward III before being overthrown and executed.
• B. Baron Mortimer of Wigmore
  Baron Mortimer of Wigmore was a prominent medieval English baronial title held by the powerful Mortimer family, whose members played key roles in the politics and conflicts of the Welsh Marches and the English crown.
• C. Thomas, 2nd Earl of Lancaster
  Thomas, 2nd Earl of Lancaster was a powerful English nobleman and cousin to King Edward II who led baronial opposition to the king and was eventually executed for his role in the rebellion.
• 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. 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.
• F. None of above. chosen