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 Shishman | Statement: [Second Bulgarian Empire, lastRuler, Ivan Shishman]

Target entity: Ivan Shishman
Context triple: [Second Bulgarian Empire, lastRuler, Ivan Shishman]

• A. 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.
• B. Simeon I of Bulgaria
  Simeon I of Bulgaria was a powerful medieval Bulgarian tsar whose reign (893–927) marked the political and cultural zenith of the First Bulgarian Empire and earned him the epithet "the Great."
• 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. Peter I of Serbia
  Peter I of Serbia was the King of Serbia and later the first King of the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia), remembered for his leadership during the Balkan Wars and World War I and his role in unifying South Slavic peoples.
• 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 Shishman
Triple: [Second Bulgarian Empire, lastRuler, Ivan Shishman]

Ivan Shishman was the final medieval tsar of Bulgaria, ruling during the late 14th century as the Second Bulgarian Empire collapsed under Ottoman conquest.

Target entity: Ivan Shishman
Target entity description: Ivan Shishman was the final medieval tsar of Bulgaria, ruling during the late 14th century as the Second Bulgarian Empire collapsed under Ottoman conquest.

• A. 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.
• B. Simeon I of Bulgaria
  Simeon I of Bulgaria was a powerful medieval Bulgarian tsar whose reign (893–927) marked the political and cultural zenith of the First Bulgarian Empire and earned him the epithet "the Great."
• 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. Peter I of Serbia
  Peter I of Serbia was the King of Serbia and later the first King of the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia), remembered for his leadership during the Balkan Wars and World War I and his role in unifying South Slavic peoples.
• 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