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: Marcus Cassianius Latinius Postumus | Statement: [Postumus, name, Marcus Cassianius Latinius Postumus]

Target entity: Marcus Cassianius Latinius Postumus
Context triple: [Postumus, name, Marcus Cassianius Latinius Postumus]

• A. Macrinus
  Macrinus was a Roman emperor who briefly ruled from 217 to 218 CE, notable for being the first emperor to come from the equestrian class rather than the traditional senatorial aristocracy.
• B. Emperor Carus
  Emperor Carus was a late 3rd-century Roman emperor known for his brief but successful military campaigns against the Sassanian Empire and his sudden, mysterious death during the Persian campaign.
• C. Numerian
  Numerian was a Roman emperor of the late 3rd century who briefly ruled the eastern half of the empire before his mysterious death in 284 AD.
• D. Licinius II
  Licinius II was a Roman imperial prince of the early 4th century, son of Emperor Licinius I and Constantia (half-sister of Constantine the Great), who briefly held the junior title of Caesar before his execution amid dynastic conflicts.
• E. Gordian II
  Gordian II was a short-lived Roman emperor of the 3rd century who briefly co-ruled with his father Gordian I during the Year of the Six Emperors in 238 AD.
• 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: Marcus Cassianius Latinius Postumus
Triple: [Postumus, name, Marcus Cassianius Latinius Postumus]

Marcus Cassianius Latinius Postumus was a 3rd-century Roman military commander who declared himself emperor and ruled the breakaway Gallic Empire in Gaul, Britain, and Hispania.

Target entity: Marcus Cassianius Latinius Postumus
Target entity description: Marcus Cassianius Latinius Postumus was a 3rd-century Roman military commander who declared himself emperor and ruled the breakaway Gallic Empire in Gaul, Britain, and Hispania.

• A. Macrinus
  Macrinus was a Roman emperor who briefly ruled from 217 to 218 CE, notable for being the first emperor to come from the equestrian class rather than the traditional senatorial aristocracy.
• B. Emperor Carus
  Emperor Carus was a late 3rd-century Roman emperor known for his brief but successful military campaigns against the Sassanian Empire and his sudden, mysterious death during the Persian campaign.
• C. Numerian
  Numerian was a Roman emperor of the late 3rd century who briefly ruled the eastern half of the empire before his mysterious death in 284 AD.
• D. Licinius II
  Licinius II was a Roman imperial prince of the early 4th century, son of Emperor Licinius I and Constantia (half-sister of Constantine the Great), who briefly held the junior title of Caesar before his execution amid dynastic conflicts.
• E. Gordian II
  Gordian II was a short-lived Roman emperor of the 3rd century who briefly co-ruled with his father Gordian I during the Year of the Six Emperors in 238 AD.
• F. None of above. chosen