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: Serbian campaign | Statement: [Balkan theatre of World War I, hasPart, Serbian campaign]

Target entity: Serbian campaign
Context triple: [Balkan theatre of World War I, hasPart, Serbian campaign]

• A. Balkan Campaign
  The Balkan Campaign was a series of World War II military operations in southeastern Europe, primarily involving Axis invasions of Yugoslavia and Greece in 1941.
• B. Invasion of Serbia (1915) chosen
  The Invasion of Serbia (1915) was a Central Powers offensive during World War I that overwhelmed Serbian forces, leading to the occupation of Serbia and a massive civilian and military retreat through Albania.
• C. Serbo-Bulgarian War
  The Serbo-Bulgarian War was a brief 1885 conflict in the Balkans between Serbia and the newly unified Bulgaria that helped establish Bulgaria’s military reputation and reshape regional power dynamics.
• D. Kolubara Offensive
  The Kolubara Offensive was a major World War I campaign in late 1914 in which Serbian forces successfully repelled an Austro-Hungarian invasion, securing a significant defensive victory.
• E. Serbian–Ottoman War (1876–1878)
  The Serbian–Ottoman War (1876–1878) was a key Balkan conflict in which Serbia, backed by Russia and other Slavic supporters, fought the Ottoman Empire as part of the broader Eastern Crisis, contributing to the weakening of Ottoman control in the region and paving the way for Serbian independence and territorial expansion.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.