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: Yuri II Boleslav | Statement: [Kingdom of Rus', notableRuler, Yuri II Boleslav]

Target entity: Yuri II Boleslav
Context triple: [Kingdom of Rus', notableRuler, Yuri II Boleslav]

• A. Yuri I of Galicia
  Yuri I of Galicia was a medieval ruler of the Kingdom of Galicia–Volhynia, known for consolidating power in the region and maintaining its political significance in Eastern Europe.
• B. Yuri II of Vladimir
  Yuri II of Vladimir was a 13th-century Grand Prince of Vladimir-Suzdal, known as a key ruler of medieval northeastern Rus' and a founder of several important Russian towns.
• C. Yaroslav II of Vladimir
  Yaroslav II of Vladimir was a 13th-century Grand Prince of Vladimir-Suzdal and a prominent Rus' ruler, best known as the father of the famed military leader and saint Alexander Nevsky.
• D. Sviatopolk I of Kiev
  Sviatopolk I of Kiev was a Grand Prince of Kievan Rus' known for his violent struggle for power and the alleged murder of his half-brothers, earning him the epithet "the Accursed."
• E. Sviatoslav III of Vladimir
  Sviatoslav III of Vladimir was a 13th-century prince of Vladimir-Suzdal who briefly ruled the Grand Principality of Vladimir during the politically turbulent period following the Mongol invasion of Rus'.
• 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: Yuri II Boleslav
Triple: [Kingdom of Rus', notableRuler, Yuri II Boleslav]

Yuri II Boleslav was a 14th-century prince of the Rurikid realm who ruled over parts of the Kingdom of Rus', notably as Grand Prince of Vladimir-Suzdal.

Target entity: Yuri II Boleslav
Target entity description: Yuri II Boleslav was a 14th-century prince of the Rurikid realm who ruled over parts of the Kingdom of Rus', notably as Grand Prince of Vladimir-Suzdal.

• A. Yuri I of Galicia
  Yuri I of Galicia was a medieval ruler of the Kingdom of Galicia–Volhynia, known for consolidating power in the region and maintaining its political significance in Eastern Europe.
• B. Yuri II of Vladimir chosen
  Yuri II of Vladimir was a 13th-century Grand Prince of Vladimir-Suzdal, known as a key ruler of medieval northeastern Rus' and a founder of several important Russian towns.
• C. Yaroslav II of Vladimir
  Yaroslav II of Vladimir was a 13th-century Grand Prince of Vladimir-Suzdal and a prominent Rus' ruler, best known as the father of the famed military leader and saint Alexander Nevsky.
• D. Sviatopolk I of Kiev
  Sviatopolk I of Kiev was a Grand Prince of Kievan Rus' known for his violent struggle for power and the alleged murder of his half-brothers, earning him the epithet "the Accursed."
• E. Sviatoslav III of Vladimir
  Sviatoslav III of Vladimir was a 13th-century prince of Vladimir-Suzdal who briefly ruled the Grand Principality of Vladimir during the politically turbulent period following the Mongol invasion of Rus'.
• F. None of above.