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: Ivan Sratsimir of Bulgaria | Statement: [Shishman dynasty, hasMember, Ivan Sratsimir of Bulgaria]

Target entity: Ivan Sratsimir of Bulgaria
Context triple: [Shishman dynasty, hasMember, Ivan Sratsimir of Bulgaria]

• A. Ivan Stephen of Bulgaria
  Ivan Stephen of Bulgaria was a 14th-century tsar of Bulgaria from the Shishman dynasty whose brief reign reflected the political instability of the medieval Bulgarian state.
• B. Ivan Vladislav of Bulgaria
  Ivan Vladislav of Bulgaria was the last Tsar of the First Bulgarian Empire, known for his fierce resistance against Byzantine expansion before the empire’s eventual fall in 1018.
• C. Peter I of Bulgaria
  Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
• D. Ivan Alexander of Bulgaria
  Ivan Alexander of Bulgaria was a 14th-century tsar who presided over a cultural and religious revival in the Second Bulgarian Empire while struggling against internal fragmentation and external threats.
• E. Samuel of Bulgaria
  Samuel of Bulgaria was a medieval Tsar who led the First Bulgarian Empire at its height around the turn of the 11th century, fiercely resisting Byzantine expansion until its eventual conquest.
• 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: Ivan Sratsimir of Bulgaria
Triple: [Shishman dynasty, hasMember, Ivan Sratsimir of Bulgaria]

Ivan Sratsimir of Bulgaria was a 14th-century Bulgarian tsar who ruled the Vidin-based western Bulgarian kingdom during the final decades before the Ottoman conquest.

Target entity: Ivan Sratsimir of Bulgaria
Target entity description: Ivan Sratsimir of Bulgaria was a 14th-century Bulgarian tsar who ruled the Vidin-based western Bulgarian kingdom during the final decades before the Ottoman conquest.

• A. Ivan Stephen of Bulgaria
  Ivan Stephen of Bulgaria was a 14th-century tsar of Bulgaria from the Shishman dynasty whose brief reign reflected the political instability of the medieval Bulgarian state.
• B. Ivan Vladislav of Bulgaria
  Ivan Vladislav of Bulgaria was the last Tsar of the First Bulgarian Empire, known for his fierce resistance against Byzantine expansion before the empire’s eventual fall in 1018.
• C. Peter I of Bulgaria
  Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
• D. Ivan Alexander of Bulgaria
  Ivan Alexander of Bulgaria was a 14th-century tsar who presided over a cultural and religious revival in the Second Bulgarian Empire while struggling against internal fragmentation and external threats.
• E. Samuel of Bulgaria
  Samuel of Bulgaria was a medieval Tsar who led the First Bulgarian Empire at its height around the turn of the 11th century, fiercely resisting Byzantine expansion until its eventual conquest.
• F. None of above. chosen