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: Vsevolod Mstislavich | Statement: [Prince of Novgorod, officeHolder, Vsevolod Mstislavich]

Target entity: Vsevolod Mstislavich
Context triple: [Prince of Novgorod, officeHolder, Vsevolod Mstislavich]

• A. Vyacheslav Yaroslavich
  Vyacheslav Yaroslavich was a lesser-known 11th-century Rus' prince, one of the sons of Grand Prince Yaroslav the Wise of Kiev.
• B. Sviatoslav Olgovich
  Sviatoslav Olgovich was a 12th-century prince from the Olgovichi branch of the Rurikid dynasty who ruled in parts of Kievan Rus' and took part in its dynastic conflicts.
• C. Mstislav the Bold
  Mstislav the Bold was a 13th-century Kievan Rus' prince and military leader known for his resistance against the Mongol invasion, notably during the early clashes that culminated in the Battle of the Kalka River.
• D. Yuri Bogolyubsky
  Yuri Bogolyubsky was a Rus' prince who became the second husband of Queen Tamar of Georgia and briefly co-ruled before being deposed and exiled.
• E. 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.
• 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: Vsevolod Mstislavich
Triple: [Prince of Novgorod, officeHolder, Vsevolod Mstislavich]

Vsevolod Mstislavich was a 12th-century Rurikid prince known for his turbulent reigns in Novgorod and later in Pskov, where he became the city’s first independent prince.

Target entity: Vsevolod Mstislavich
Target entity description: Vsevolod Mstislavich was a 12th-century Rurikid prince known for his turbulent reigns in Novgorod and later in Pskov, where he became the city’s first independent prince.

• A. Vyacheslav Yaroslavich
  Vyacheslav Yaroslavich was a lesser-known 11th-century Rus' prince, one of the sons of Grand Prince Yaroslav the Wise of Kiev.
• B. Sviatoslav Olgovich
  Sviatoslav Olgovich was a 12th-century prince from the Olgovichi branch of the Rurikid dynasty who ruled in parts of Kievan Rus' and took part in its dynastic conflicts.
• C. Mstislav the Bold
  Mstislav the Bold was a 13th-century Kievan Rus' prince and military leader known for his resistance against the Mongol invasion, notably during the early clashes that culminated in the Battle of the Kalka River.
• D. Yuri Bogolyubsky
  Yuri Bogolyubsky was a Rus' prince who became the second husband of Queen Tamar of Georgia and briefly co-ruled before being deposed and exiled.
• E. 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.
• F. None of above. chosen