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: Bulgarian Empire | Statement: [Serbian principalities, conflictWith, Bulgarian Empire]

Target entity: Bulgarian Empire
Context triple: [Serbian principalities, conflictWith, Bulgarian Empire]

• A. First Bulgarian Empire chosen
  The First Bulgarian Empire was a medieval Balkan state that became a major political and cultural power in Eastern Europe, playing a key role in the spread of Slavic literacy and Orthodox Christianity.
• B. Second Bulgarian Empire
  The Second Bulgarian Empire was a medieval Bulgarian state (1185–1396) that emerged after a successful uprising against Byzantine rule and became a major political and cultural power in the Balkans before falling to the Ottoman Empire.
• C. Serbian Empire
  The Serbian Empire was a powerful medieval Balkan state that reached its zenith in the 14th century under Emperor Stefan Dušan, encompassing large parts of the central and southern Balkans.
• D. Old Great Bulgaria
  Old Great Bulgaria was a 7th-century Bulgar state on the Pontic–Caspian steppe that formed an important early political center of the Bulgars before their migration and the establishment of the First Bulgarian Empire.
• E. Kingdom of Thrace
  The Kingdom of Thrace was a Hellenistic monarchy in the region of Thrace, established after Alexander the Great’s death and known for its strategic position between Greece and Asia Minor.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.