Triple

Target entity: First Bulgarian Empire (in some territories)
Context triple: [Avars, successor, First Bulgarian Empire (in some territories)]

• 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. Bulgarian Empire
  The Bulgarian Empire was a powerful medieval state on the Balkan Peninsula that played a major role in Southeast European politics, culture, and warfare between the 7th and 14th centuries.
• C. 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.
• 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. Old Great Bulgar Khanate
  Old Great Bulgar Khanate was a 7th-century nomadic Bulgar state in the Pontic–Caspian steppe that served as an important precursor to both the Volga Bulgar and First Bulgarian Empires.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.