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: Ferdinand I of Bulgaria | Statement: [Bulgarian royal family, founderOfDynastyInBulgaria, Ferdinand I of Bulgaria]

Target entity: Ferdinand I of Bulgaria
Context triple: [Bulgarian royal family, founderOfDynastyInBulgaria, Ferdinand I of Bulgaria]

• A. Ferdinand I of Bulgaria chosen
  Ferdinand I of Bulgaria was the ruler who transformed Bulgaria from a principality into an independent kingdom, serving as its prince and later tsar from 1887 to 1918 and leading the country through the Balkan Wars and World War I.
• B. Boris III of Bulgaria
  Boris III of Bulgaria was the Tsar of Bulgaria from 1918 to 1943, known for steering his country through the interwar period and most of World War II while attempting to maintain a degree of independence from Nazi Germany.
• C. Peter IV of Bulgaria
  Peter IV of Bulgaria was a medieval Bulgarian tsar who played a key role in the restoration of Bulgarian independence and the establishment of the Second Bulgarian Empire in the late 12th century.
• D. Alexander I of Bulgaria
  Alexander I of Bulgaria was the first modern ruler of an autonomous Bulgaria after Ottoman rule, reigning as prince from 1879 to 1886 during the formative years of the Bulgarian state.
• E. Peter I of Bulgaria
  Peter I of Bulgaria was a 10th-century tsar of the First Bulgarian Empire known for his long and relatively peaceful reign, during which Bulgaria strengthened its Christianity and diplomatic ties with Byzantium.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target predicate: founderOfDynastyInBulgaria
Context triple: [Bulgarian royal family, founderOfDynastyInBulgaria, Ferdinand I of Bulgaria]

• A. founderOfPredecessor
  Indicates that an entity is the founder of another entity that served as a predecessor to a specified organization or institution.
• B. reignAsGrandPrinceOfVladimirFrom
  Indicates that a person held the position of Grand Prince of Vladimir starting from a specified time.
• C. nameInBulgarian
  Indicates that an entity is referred to by a specific name when expressed in the Bulgarian language.
• D. foundedEmpire
  Indicates that a person or group established and brought into existence an empire as a political entity.
• E. firstMonarch
  Indicates that the subject is the first monarch (initial ruler) of the object polity or domain.
• F. None of above. chosen