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: Vlastimir of Serbia | Statement: [Grand Prince of Serbia, positionHeldBy, Vlastimir of Serbia]

Target entity: Vlastimir of Serbia
Context triple: [Grand Prince of Serbia, positionHeldBy, Vlastimir of Serbia]

• A. Stefan Vladislav I of Serbia
  Stefan Vladislav I of Serbia was a 13th-century king of the medieval Serbian state from the Nemanjić dynasty, known for his reign during a period of consolidation and regional conflict in the Balkans.
• B. Konstantin of Serbia
  Konstantin of Serbia was a medieval Serbian prince, son of King Stefan Uroš II Milutin, who was involved in the dynastic struggles of the Nemanjić dynasty.
• C. King Stefan Dečanski of Serbia
  King Stefan Dečanski of Serbia was a 14th-century Serbian monarch known for consolidating the medieval Serbian state and commissioning the Visoki Dečani Monastery, a masterpiece of Serbian medieval architecture.
• D. King Stefan Dragutin of Serbia
  King Stefan Dragutin of Serbia was a 13th–14th century Serbian monarch from the Nemanjić dynasty who ruled parts of Serbia and Bosnia and played a key role in the regional politics of the Balkans.
• E. Tihomir of Serbia
  Tihomir of Serbia was a 12th-century Serbian ruler from the Vukanović dynasty who governed as grand prince before being overthrown by his brother Stefan Nemanja.
• 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: Vlastimir of Serbia
Triple: [Grand Prince of Serbia, positionHeldBy, Vlastimir of Serbia]

Vlastimir of Serbia was a 9th-century Serbian ruler who consolidated early medieval Serbia and is often regarded as the founder of the first Serbian state dynasty.

Target entity: Vlastimir of Serbia
Target entity description: Vlastimir of Serbia was a 9th-century Serbian ruler who consolidated early medieval Serbia and is often regarded as the founder of the first Serbian state dynasty.

• A. Stefan Vladislav I of Serbia
  Stefan Vladislav I of Serbia was a 13th-century king of the medieval Serbian state from the Nemanjić dynasty, known for his reign during a period of consolidation and regional conflict in the Balkans.
• B. Konstantin of Serbia
  Konstantin of Serbia was a medieval Serbian prince, son of King Stefan Uroš II Milutin, who was involved in the dynastic struggles of the Nemanjić dynasty.
• C. King Stefan Dečanski of Serbia
  King Stefan Dečanski of Serbia was a 14th-century Serbian monarch known for consolidating the medieval Serbian state and commissioning the Visoki Dečani Monastery, a masterpiece of Serbian medieval architecture.
• D. King Stefan Dragutin of Serbia
  King Stefan Dragutin of Serbia was a 13th–14th century Serbian monarch from the Nemanjić dynasty who ruled parts of Serbia and Bosnia and played a key role in the regional politics of the Balkans.
• E. Tihomir of Serbia
  Tihomir of Serbia was a 12th-century Serbian ruler from the Vukanović dynasty who governed as grand prince before being overthrown by his brother Stefan Nemanja.
• F. None of above. chosen