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: Asen I of Bulgaria | Statement: [Uprising of Asen and Peter, hasLeader, Asen I of Bulgaria]

Target entity: Asen I of Bulgaria
Context triple: [Uprising of Asen and Peter, hasLeader, Asen I of Bulgaria]

• A. Presian I of Bulgaria
  Presian I of Bulgaria was a 9th-century khan who significantly expanded the First Bulgarian Empire into the Balkans prior to the Christianization under his successor Boris I.
• B. Boris II of Bulgaria
  Boris II of Bulgaria was a 10th-century Bulgarian tsar whose short and troubled reign marked the beginning of the decline of the First Bulgarian Empire under Byzantine pressure.
• C. Alexander I of Bulgaria
  Alexander I of Bulgaria was the first modern ruler of an autonomous Bulgaria after Ottoman rule, reigning as prince from 1879 to 1886 during the formative years of the Bulgarian state.
• D. Khan Asparuh of Bulgaria
  Khan Asparuh of Bulgaria was the 7th-century Bulgar ruler who founded the First Bulgarian Empire in the Balkans and is regarded as the founder of the Bulgarian state.
• E. 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.
• 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: Asen I of Bulgaria
Triple: [Uprising of Asen and Peter, hasLeader, Asen I of Bulgaria]

Asen I of Bulgaria was a medieval Bulgarian tsar who, together with his brother Peter, led the successful uprising that restored the Second Bulgarian Empire in the late 12th century.

Target entity: Asen I of Bulgaria
Target entity description: Asen I of Bulgaria was a medieval Bulgarian tsar who, together with his brother Peter, led the successful uprising that restored the Second Bulgarian Empire in the late 12th century.

• A. Presian I of Bulgaria
  Presian I of Bulgaria was a 9th-century khan who significantly expanded the First Bulgarian Empire into the Balkans prior to the Christianization under his successor Boris I.
• B. Boris II of Bulgaria
  Boris II of Bulgaria was a 10th-century Bulgarian tsar whose short and troubled reign marked the beginning of the decline of the First Bulgarian Empire under Byzantine pressure.
• C. Alexander I of Bulgaria
  Alexander I of Bulgaria was the first modern ruler of an autonomous Bulgaria after Ottoman rule, reigning as prince from 1879 to 1886 during the formative years of the Bulgarian state.
• D. Khan Asparuh of Bulgaria
  Khan Asparuh of Bulgaria was the 7th-century Bulgar ruler who founded the First Bulgarian Empire in the Balkans and is regarded as the founder of the Bulgarian state.
• E. 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.
• F. None of above. chosen