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: Kievan Rus' | Statement: [Vsevolodovich, namingConventionOf, Kievan Rus']

Target entity: Kievan Rus'
Context triple: [Vsevolodovich, namingConventionOf, Kievan Rus']

• A. Kyivan Rus chosen
  Kyivan Rus was a medieval East Slavic state centered in Kyiv that laid the cultural and political foundations for modern Ukraine, Russia, and Belarus.
• B. Kingdom of Rus'
  The Kingdom of Rus' was a medieval East Slavic state centered in the regions of Galicia and Volhynia, playing a key role in the political and cultural life of Eastern Europe in the 13th–14th centuries.
• C. Novgorod Republic
  The Novgorod Republic was a medieval East Slavic trading state centered on the city of Novgorod, known for its powerful merchant elite, extensive Hanseatic trade connections, and distinctive tradition of veche (assembly) governance.
• D. Principality of Kiev
  The Principality of Kiev was a medieval East Slavic state centered on the city of Kiev, which served as a major political, cultural, and religious hub of Kievan Rus' before its decline under Mongol invasion.
• E. Vladimir-Suzdal principality
  The Vladimir-Suzdal principality was a powerful medieval East Slavic state in northeastern Rus that became a major political and cultural center and a precursor to the Grand Duchy of Moscow.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target predicate: namingConventionOf
Context triple: [Vsevolodovich, namingConventionOf, Kievan Rus']

• A. namingConventionType
  Indicates the specific style or set of rules used for naming entities or elements in a given context.
• B. namingStructure
  Indicates a relationship where one entity defines, organizes, or constrains the naming or label format used for another entity.
• C. logicConvention
  Indicates a relationship where entities participate in or are associated with a convention, event, or standard related to logic or logical systems.
• D. conventionFor chosen
  Indicates a relationship where something serves as a standard, rule, or customary practice governing how another thing is done, represented, or interpreted.
• E. namingFunction
  Indicates a relationship where one entity serves as the name or naming mechanism assigned to another entity.
• F. None of above.