Bulgarian occupation of Adrianople

Target entity: Bulgarian occupation of Adrianople
Context triple: [Battle of Adrianople (1254), precededBy, Bulgarian occupation of Adrianople]

• A. Bulgarian invasion of Thrace
  The Bulgarian invasion of Thrace was an early 8th-century military campaign in which the First Bulgarian Empire attacked Byzantine territories in the Thracian region, challenging imperial control in the Balkans.
• B. Byzantine garrison of Adrianople
  The Byzantine garrison of Adrianople was the imperial military force stationed in the strategic Thracian city of Adrianople, tasked with defending it against enemy sieges and incursions such as those during the early 9th century.
• C. Siege of Shumen
  The Siege of Shumen was a major 1828 Russian attempt to capture the heavily fortified Ottoman stronghold of Shumen in Bulgaria, which played a key role in the Russo-Turkish War of 1828–1829.
• D. Ottoman conquest of Bulgaria
  The Ottoman conquest of Bulgaria was the late 14th–early 15th century series of campaigns through which the Ottoman Empire subjugated and annexed the medieval Bulgarian states, ending their independence and integrating their territories into the Ottoman realm.
• E. Siege of Adrianople (1912–1913)
  The Siege of Adrianople (1912–1913) was a major engagement of the First Balkan War in which Bulgarian and Serbian forces captured the strategically vital Ottoman city of Adrianople (Edirne), dealing a decisive blow to Ottoman control in the region.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Bulgarian occupation of Adrianople
Target entity description: The Bulgarian occupation of Adrianople was a brief period in the mid-13th century when the Bulgarian Empire seized and controlled the strategically important city of Adrianople (modern Edirne) during the regional power struggles following the Fourth Crusade.

• A. Bulgarian invasion of Thrace
  The Bulgarian invasion of Thrace was an early 8th-century military campaign in which the First Bulgarian Empire attacked Byzantine territories in the Thracian region, challenging imperial control in the Balkans.
• B. Byzantine garrison of Adrianople
  The Byzantine garrison of Adrianople was the imperial military force stationed in the strategic Thracian city of Adrianople, tasked with defending it against enemy sieges and incursions such as those during the early 9th century.
• C. Siege of Shumen
  The Siege of Shumen was a major 1828 Russian attempt to capture the heavily fortified Ottoman stronghold of Shumen in Bulgaria, which played a key role in the Russo-Turkish War of 1828–1829.
• D. Ottoman conquest of Bulgaria
  The Ottoman conquest of Bulgaria was the late 14th–early 15th century series of campaigns through which the Ottoman Empire subjugated and annexed the medieval Bulgarian states, ending their independence and integrating their territories into the Ottoman realm.
• E. Siege of Adrianople (1912–1913)
  The Siege of Adrianople (1912–1913) was a major engagement of the First Balkan War in which Bulgarian and Serbian forces captured the strategically vital Ottoman city of Adrianople (Edirne), dealing a decisive blow to Ottoman control in the region.
• F. None of above. chosen