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: Rostislav Vsevolodovich | Statement: [Vsevolod I of Kiev, child, Rostislav Vsevolodovich]

Target entity: Rostislav Vsevolodovich
Context triple: [Vsevolod I of Kiev, child, Rostislav Vsevolodovich]

• A. 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.
• B. Andrey Bogolyubsky
  Andrey Bogolyubsky was a 12th-century prince who strengthened and expanded the power of northeastern Rus', making Vladimir a major political and religious center.
• C. Vladimir-Suzdal Yurievichi
  Vladimir-Suzdal Yurievichi refers to the princely branch of the Monomakhovichi dynasty that ruled the medieval principality of Vladimir-Suzdal, a key predecessor of the Grand Duchy of Moscow in northeastern Rus'.
• D. Vladimir II Monomakh
  Vladimir II Monomakh was a Grand Prince of Kievan Rus' renowned for his military leadership, efforts to unify the realm, and authorship of the moral treatise "Instruction."
• E. 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.
• 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: Rostislav Vsevolodovich
Triple: [Vsevolod I of Kiev, child, Rostislav Vsevolodovich]

Rostislav Vsevolodovich was a medieval Rus' prince from the Rurikid dynasty, known as a son of Grand Prince Vsevolod I of Kiev and a member of the Kievan ruling elite.

Target entity: Rostislav Vsevolodovich
Target entity description: Rostislav Vsevolodovich was a medieval Rus' prince from the Rurikid dynasty, known as a son of Grand Prince Vsevolod I of Kiev and a member of the Kievan ruling elite.

• A. 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.
• B. Andrey Bogolyubsky
  Andrey Bogolyubsky was a 12th-century prince who strengthened and expanded the power of northeastern Rus', making Vladimir a major political and religious center.
• C. Vladimir-Suzdal Yurievichi
  Vladimir-Suzdal Yurievichi refers to the princely branch of the Monomakhovichi dynasty that ruled the medieval principality of Vladimir-Suzdal, a key predecessor of the Grand Duchy of Moscow in northeastern Rus'.
• D. Vladimir II Monomakh
  Vladimir II Monomakh was a Grand Prince of Kievan Rus' renowned for his military leadership, efforts to unify the realm, and authorship of the moral treatise "Instruction."
• E. 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.
• F. None of above. chosen