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: Tsar of Vidin | Statement: [Ivan Sratsimir, positionHeld, Tsar of Vidin]

Target entity: Tsar of Vidin
Context triple: [Ivan Sratsimir, positionHeld, Tsar of Vidin]

• A. Shishman of Vidin
  Shishman of Vidin was a medieval Bulgarian noble and ruler whose legacy gave his name to the Shishman dynasty, one of the last ruling houses of the Second Bulgarian Empire.
• B. Khan Krum
  Khan Krum was a powerful early 9th-century Bulgarian ruler known for expanding the First Bulgarian Empire and defeating the Byzantine Empire in major battles.
• C. Kaloyan of Bulgaria
  Kaloyan of Bulgaria was a powerful tsar of the Second Bulgarian Empire (r. 1197–1207) known for defeating the Crusaders at the Battle of Adrianople and expanding Bulgarian influence in the Balkans.
• D. Bulgarian Tsar Constantine Tikh Asen
  Bulgarian Tsar Constantine Tikh Asen was a 13th-century ruler of the Second Bulgarian Empire, known for his turbulent reign marked by internal strife and conflicts with neighboring powers.
• E. Michael II Asen of Bulgaria
  Michael II Asen of Bulgaria was a 13th-century tsar of the Second Bulgarian Empire from the Asen dynasty, known for his troubled reign marked by internal strife and foreign intervention.
• 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: Tsar of Vidin
Triple: [Ivan Sratsimir, positionHeld, Tsar of Vidin]

Tsar of Vidin was the title of the medieval Bulgarian ruler who governed the Vidin-based successor state during the fragmentation of the Second Bulgarian Empire.

Target entity: Tsar of Vidin
Target entity description: Tsar of Vidin was the title of the medieval Bulgarian ruler who governed the Vidin-based successor state during the fragmentation of the Second Bulgarian Empire.

• A. Shishman of Vidin chosen
  Shishman of Vidin was a medieval Bulgarian noble and ruler whose legacy gave his name to the Shishman dynasty, one of the last ruling houses of the Second Bulgarian Empire.
• B. Khan Krum
  Khan Krum was a powerful early 9th-century Bulgarian ruler known for expanding the First Bulgarian Empire and defeating the Byzantine Empire in major battles.
• C. Kaloyan of Bulgaria
  Kaloyan of Bulgaria was a powerful tsar of the Second Bulgarian Empire (r. 1197–1207) known for defeating the Crusaders at the Battle of Adrianople and expanding Bulgarian influence in the Balkans.
• D. Bulgarian Tsar Constantine Tikh Asen
  Bulgarian Tsar Constantine Tikh Asen was a 13th-century ruler of the Second Bulgarian Empire, known for his turbulent reign marked by internal strife and conflicts with neighboring powers.
• E. Michael II Asen of Bulgaria
  Michael II Asen of Bulgaria was a 13th-century tsar of the Second Bulgarian Empire from the Asen dynasty, known for his troubled reign marked by internal strife and foreign intervention.
• F. None of above.