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: Rastko Nemanjić | Statement: [Saint Sava, fullName, Rastko Nemanjić]

Target entity: Rastko Nemanjić
Context triple: [Saint Sava, fullName, Rastko Nemanjić]

• A. Stefan Nemanja
  Stefan Nemanja was a 12th-century Grand Prince of Serbia and founder of the Nemanjić dynasty, later venerated as Saint Simeon the Myrrh-streaming in the Serbian Orthodox Church.
• B. Stefan Uroš II Milutin
  Stefan Uroš II Milutin was a medieval Serbian king of the Nemanjić dynasty known for his extensive church-building and territorial expansion of the Serbian state.
• C. King Stefan Uroš III Dečanski
  King Stefan Uroš III Dečanski was a 14th-century Serbian king of the Nemanjić dynasty, noted for consolidating the medieval Serbian state and for his pious patronage of Orthodox Christian culture.
• D. Milan I of Serbia
  Milan I of Serbia was the 19th-century ruler who transformed Serbia from a principality into an independent kingdom and became its first modern king.
• E. King Stefan Uroš I of Serbia
  King Stefan Uroš I of Serbia was a 13th-century Serbian monarch of the Nemanjić dynasty known for consolidating royal authority and fostering cultural and religious development in medieval Serbia.
• 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: Rastko Nemanjić
Triple: [Saint Sava, fullName, Rastko Nemanjić]

Rastko Nemanjić, better known as Saint Sava, was a medieval Serbian prince-turned-monk who became the first Archbishop of the autocephalous Serbian Orthodox Church and a foundational figure in Serbian religion, education, and statehood.

Target entity: Rastko Nemanjić
Target entity description: Rastko Nemanjić, better known as Saint Sava, was a medieval Serbian prince-turned-monk who became the first Archbishop of the autocephalous Serbian Orthodox Church and a foundational figure in Serbian religion, education, and statehood.

• A. Stefan Nemanja
  Stefan Nemanja was a 12th-century Grand Prince of Serbia and founder of the Nemanjić dynasty, later venerated as Saint Simeon the Myrrh-streaming in the Serbian Orthodox Church.
• B. Stefan Uroš II Milutin
  Stefan Uroš II Milutin was a medieval Serbian king of the Nemanjić dynasty known for his extensive church-building and territorial expansion of the Serbian state.
• C. King Stefan Uroš III Dečanski
  King Stefan Uroš III Dečanski was a 14th-century Serbian king of the Nemanjić dynasty, noted for consolidating the medieval Serbian state and for his pious patronage of Orthodox Christian culture.
• D. Milan I of Serbia
  Milan I of Serbia was the 19th-century ruler who transformed Serbia from a principality into an independent kingdom and became its first modern king.
• E. King Stefan Uroš I of Serbia
  King Stefan Uroš I of Serbia was a 13th-century Serbian monarch of the Nemanjić dynasty known for consolidating royal authority and fostering cultural and religious development in medieval Serbia.
• F. None of above. chosen