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: Duchy of Polotsk | Statement: [Principality of Polotsk, followedBy, Duchy of Polotsk]

Target entity: Duchy of Polotsk
Context triple: [Principality of Polotsk, followedBy, Duchy of Polotsk]

• A. Principality of Polotsk
  The Principality of Polotsk was a major medieval East Slavic state centered on the city of Polotsk, influential in the political and cultural development of what is now Belarus and parts of northeastern Europe.
• B. Principality of Volhynia
  The Principality of Volhynia was a medieval East Slavic state centered in the Volhynia region (in present-day western Ukraine), which later became part of the powerful Kingdom of Galicia–Volhynia.
• C. Principality of Tver
  The Principality of Tver was a medieval East Slavic state centered on the city of Tver that rivaled Moscow for dominance in northeastern Rus' before being annexed by the Grand Duchy of Moscow.
• D. Principality of Trubchevsk
  The Principality of Trubchevsk was a medieval East Slavic principality centered on the town of Trubchevsk, historically part of the broader political landscape of Kievan Rus' and its successor states.
• E. Principality of Starodub
  The Principality of Starodub was a medieval East Slavic principality centered on the town of Starodub, historically associated with the Rurikid Olgovichi dynasty.
• 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: Duchy of Polotsk
Triple: [Principality of Polotsk, followedBy, Duchy of Polotsk]

The Duchy of Polotsk was a medieval East Slavic polity centered on the city of Polotsk, which emerged as a successor state in the region of present-day Belarus.

Target entity: Duchy of Polotsk
Target entity description: The Duchy of Polotsk was a medieval East Slavic polity centered on the city of Polotsk, which emerged as a successor state in the region of present-day Belarus.

• A. Principality of Polotsk chosen
  The Principality of Polotsk was a major medieval East Slavic state centered on the city of Polotsk, influential in the political and cultural development of what is now Belarus and parts of northeastern Europe.
• B. Principality of Volhynia
  The Principality of Volhynia was a medieval East Slavic state centered in the Volhynia region (in present-day western Ukraine), which later became part of the powerful Kingdom of Galicia–Volhynia.
• C. Principality of Tver
  The Principality of Tver was a medieval East Slavic state centered on the city of Tver that rivaled Moscow for dominance in northeastern Rus' before being annexed by the Grand Duchy of Moscow.
• D. Principality of Trubchevsk
  The Principality of Trubchevsk was a medieval East Slavic principality centered on the town of Trubchevsk, historically part of the broader political landscape of Kievan Rus' and its successor states.
• E. Principality of Starodub
  The Principality of Starodub was a medieval East Slavic principality centered on the town of Starodub, historically associated with the Rurikid Olgovichi dynasty.
• F. None of above.