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: Magnentius | Statement: [Constantius II, opponent, Magnentius]

Target entity: Magnentius
Context triple: [Constantius II, opponent, Magnentius]

• A. Constantine III
  Constantine III was a late Roman general who declared himself Western Roman Emperor in Britain in 407 AD, briefly controlling much of Gaul and Hispania before being defeated and executed.
• B. Majorian
  Majorian was a 5th-century Western Roman emperor noted for his energetic but ultimately unsuccessful efforts to restore the crumbling empire through military campaigns and administrative reforms.
• C. Olybrius
  Olybrius was a short-lived 5th-century Western Roman emperor whose brief reign in 472 occurred during the empire’s final period of political fragmentation and decline.
• D. Jovinus
  Jovinus was a Roman usurper who briefly claimed the imperial title in Gaul during the early 5th century Western Roman Empire.
• E. Maxentius
  Maxentius was a Roman emperor who ruled Italy and Africa in the early 4th century and was famously defeated by Constantine the Great at the Battle of the Milvian Bridge.
• 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: Magnentius
Triple: [Constantius II, opponent, Magnentius]

Magnentius was a Roman usurper and military commander who seized control of much of the Western Roman Empire in the mid-4th century before being defeated by Emperor Constantius II.

Target entity: Magnentius
Target entity description: Magnentius was a Roman usurper and military commander who seized control of much of the Western Roman Empire in the mid-4th century before being defeated by Emperor Constantius II.

• A. Constantine III
  Constantine III was a late Roman general who declared himself Western Roman Emperor in Britain in 407 AD, briefly controlling much of Gaul and Hispania before being defeated and executed.
• B. Majorian
  Majorian was a 5th-century Western Roman emperor noted for his energetic but ultimately unsuccessful efforts to restore the crumbling empire through military campaigns and administrative reforms.
• C. Olybrius
  Olybrius was a short-lived 5th-century Western Roman emperor whose brief reign in 472 occurred during the empire’s final period of political fragmentation and decline.
• D. Jovinus
  Jovinus was a Roman usurper who briefly claimed the imperial title in Gaul during the early 5th century Western Roman Empire.
• E. Maxentius
  Maxentius was a Roman emperor who ruled Italy and Africa in the early 4th century and was famously defeated by Constantine the Great at the Battle of the Milvian Bridge.
• F. None of above. chosen