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: Serbian Grand Principality | Statement: [Duklja, successor, Serbian Grand Principality]

Target entity: Serbian Grand Principality
Context triple: [Duklja, successor, Serbian Grand Principality]

• A. Serbian Grand Principality chosen
  The Serbian Grand Principality was a medieval South Slavic state that formed the core of early Serbia, laying the foundations for the later Serbian Kingdom and Empire.
• B. Kingdom of Serbia (medieval)
  The Kingdom of Serbia (medieval) was a South Slavic state in the Balkans that rose to regional prominence in the Middle Ages, laying the foundations for the later Serbian Empire.
• C. Principality of Serbia
  The Principality of Serbia was a 19th-century Serbian state that emerged from Ottoman suzerainty and laid the foundations for the modern Serbian nation-state.
• D. Serbian principalities
  The Serbian principalities were a group of medieval South Slavic states in the Balkans that emerged from the fragmentation of earlier Serbian realms and frequently clashed with neighboring powers such as the Ottoman Empire.
• E. Duchy of Saint Sava
  The Duchy of Saint Sava was a late medieval South Slavic principality in the western Balkans that formed the historical core of what later became known as Herzegovina.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.