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: Medieval Kingdom of Serbia | Statement: [Serbs, historicalState, Medieval Kingdom of Serbia]

Target entity: Medieval Kingdom of Serbia
Context triple: [Serbs, historicalState, Medieval Kingdom of Serbia]

• A. Kingdom of Serbia chosen
  The Kingdom of Serbia was a Balkan monarchy that emerged as an independent state in the 19th century and later became a core constituent of the state that evolved into Yugoslavia.
• B. 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.
• C. Great Moravia
  Great Moravia was a 9th-century Slavic state in Central Europe that became an important early center of Slavic culture, Christianity, and political organization.
• D. 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.
• E. First Bulgarian Empire
  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.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.