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: Rurikid appanage system | Statement: [Prince of Chernigov, partOf, Rurikid appanage system]

Target entity: Rurikid appanage system
Context triple: [Prince of Chernigov, partOf, Rurikid appanage system]

• A. Rurikid principalities chosen
  Rurikid principalities were medieval East Slavic states ruled by the Rurikid dynasty, encompassing various regional realms that emerged from the fragmentation of Kievan Rus'.
• B. Rurik dynasty
  The Rurik dynasty was the first ruling dynasty of Kievan Rus' and later Muscovy, traditionally traced to the Varangian prince Rurik and his descendants who governed much of Eastern Europe from the 9th to the 16th century.
• C. Iqta system
  The Iqta system was a medieval Islamic land revenue and military administration framework in which state-assigned land grants funded soldiers and officials in lieu of direct cash salaries.
• D. Imperial Russian administrative system
  The Imperial Russian administrative system was the hierarchical framework of territorial governance and bureaucracy that organized the Russian Empire into units such as governorates, provinces, and districts under centralized autocratic rule.
• E. Gokishichidō system
  The Gokishichidō system was an ancient Japanese administrative and road network framework that organized the country into five central provinces and seven regional circuits.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.