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: Yaroslavich princes | Statement: [Russkaya Pravda, developedUnderRuler, Yaroslavich princes]

Target entity: Yaroslavich princes
Context triple: [Russkaya Pravda, developedUnderRuler, Yaroslavich princes]

• A. Rostislavichi of Smolensk
  The Rostislavichi of Smolensk were a medieval princely branch of the Rurikid dynasty that ruled the Principality of Smolensk in Kievan Rus and its successor states.
• B. Sviatoslavichi of Chernigov
  The Sviatoslavichi of Chernigov were a medieval Rurikid princely lineage that ruled the Principality of Chernigov and played a major role in the politics of Kievan Rus'.
• C. Vyacheslav Yaroslavich
  Vyacheslav Yaroslavich was a lesser-known 11th-century Rus' prince, one of the sons of Grand Prince Yaroslav the Wise of Kiev.
• D. Andrey Yaroslavich
  Andrey Yaroslavich was a 13th-century Russian prince of the Rurikid dynasty, known as a son of Grand Prince Yaroslav II of Vladimir and a participant in the political struggles of northeastern Rus' during the Mongol domination.
• E. 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.
• 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: Yaroslavich princes
Triple: [Russkaya Pravda, developedUnderRuler, Yaroslavich princes]

The Yaroslavich princes were the sons and successors of Yaroslav the Wise who jointly ruled Kievan Rus' in the mid-11th century and played a key role in consolidating its legal and political institutions.

Target entity: Yaroslavich princes
Target entity description: The Yaroslavich princes were the sons and successors of Yaroslav the Wise who jointly ruled Kievan Rus' in the mid-11th century and played a key role in consolidating its legal and political institutions.

• A. Rostislavichi of Smolensk
  The Rostislavichi of Smolensk were a medieval princely branch of the Rurikid dynasty that ruled the Principality of Smolensk in Kievan Rus and its successor states.
• B. Sviatoslavichi of Chernigov
  The Sviatoslavichi of Chernigov were a medieval Rurikid princely lineage that ruled the Principality of Chernigov and played a major role in the politics of Kievan Rus'.
• C. Vyacheslav Yaroslavich chosen
  Vyacheslav Yaroslavich was a lesser-known 11th-century Rus' prince, one of the sons of Grand Prince Yaroslav the Wise of Kiev.
• D. Andrey Yaroslavich
  Andrey Yaroslavich was a 13th-century Russian prince of the Rurikid dynasty, known as a son of Grand Prince Yaroslav II of Vladimir and a participant in the political struggles of northeastern Rus' during the Mongol domination.
• E. 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.
• F. None of above.