Triple

Target entity: Kingdom of Hungary
Context triple: [Battle of Nicopolis, belligerent, Kingdom of Hungary]

• A. Kingdom of Hungary chosen
  The Kingdom of Hungary was a historic Central European monarchy that existed for over eight centuries, playing a major political and cultural role in the region from the Middle Ages until the early 20th century.
• B. Principality of Hungary
  The Principality of Hungary was an early medieval Hungarian state formed by the Magyars in the Carpathian Basin before their consolidation into the later Kingdom of Hungary.
• C. Eastern Hungarian Kingdom
  The Eastern Hungarian Kingdom was a 16th-century Hungarian state that emerged after the Battle of Mohács, controlling the eastern parts of the former Kingdom of Hungary under the rule of the Jagiellonian and later Zápolya dynasties.
• D. Duchy of Austria
  The Duchy of Austria was a medieval principality in Central Europe that emerged from the Margraviate of Austria and became a key power base of the Habsburgs within the Holy Roman Empire.
• E. Kingdom of Croatia
  The Kingdom of Croatia was a historical European kingdom in the western Balkans that existed in various forms from the Middle Ages until the early 20th century, often in union with or under the influence of larger powers such as Hungary and Austria.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.