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: Tiberius (son of Constans II) | Statement: [Constantine IV, coEmperorWith, Tiberius (son of Constans II)]

Target entity: Tiberius (son of Constans II)
Context triple: [Constantine IV, coEmperorWith, Tiberius (son of Constans II)]

• A. Leo II
  Leo II was a short-reigning Eastern Roman (Byzantine) emperor in the late 5th century, notable for being the grandson and brief successor of Emperor Leo I.
• B. Emperor Constantine VI
  Emperor Constantine VI was a Byzantine emperor of the Isaurian dynasty who ruled in the late 8th century, known for his troubled reign marked by regency under his mother Irene and eventual deposition and blinding.
• C. Anastasius I
  Anastasius I was a Byzantine emperor (r. 491–518) known for his financial reforms, religious controversies, and efforts to strengthen the Eastern Roman Empire.
• D. Emperor Constans II
  Emperor Constans II was a 7th-century Byzantine emperor known for his long and turbulent reign marked by religious controversies, military conflicts with the Arabs, and an unusual relocation of the imperial court to Syracuse in Sicily.
• E. Constantin Constantius
  Constantin Constantius is a literary pseudonym of Danish philosopher Søren Kierkegaard, under which he explored themes of repetition, subjectivity, and existential inwardness.
• 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: Tiberius (son of Constans II)
Triple: [Constantine IV, coEmperorWith, Tiberius (son of Constans II)]

Tiberius was a 7th-century Byzantine prince and briefly junior emperor, the son of Emperor Constans II and brother of Constantine IV.

Target entity: Tiberius (son of Constans II)
Target entity description: Tiberius was a 7th-century Byzantine prince and briefly junior emperor, the son of Emperor Constans II and brother of Constantine IV.

• A. Leo II
  Leo II was a short-reigning Eastern Roman (Byzantine) emperor in the late 5th century, notable for being the grandson and brief successor of Emperor Leo I.
• B. Emperor Constantine VI
  Emperor Constantine VI was a Byzantine emperor of the Isaurian dynasty who ruled in the late 8th century, known for his troubled reign marked by regency under his mother Irene and eventual deposition and blinding.
• C. Anastasius I
  Anastasius I was a Byzantine emperor (r. 491–518) known for his financial reforms, religious controversies, and efforts to strengthen the Eastern Roman Empire.
• D. Emperor Constans II
  Emperor Constans II was a 7th-century Byzantine emperor known for his long and turbulent reign marked by religious controversies, military conflicts with the Arabs, and an unusual relocation of the imperial court to Syracuse in Sicily.
• E. Constantin Constantius
  Constantin Constantius is a literary pseudonym of Danish philosopher Søren Kierkegaard, under which he explored themes of repetition, subjectivity, and existential inwardness.
• F. None of above. chosen