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: Leopold VI, Duke of Austria | Statement: [Frederick II, Duke of Austria, father, Leopold VI, Duke of Austria]

Target entity: Leopold VI, Duke of Austria
Context triple: [Frederick II, Duke of Austria, father, Leopold VI, Duke of Austria]

• A. Leopold VI, Duke of Austria chosen
  Leopold VI, Duke of Austria was a prominent early 13th-century Babenberg ruler known for expanding and consolidating Austrian and Styrian territories and fostering cultural and urban development, particularly in Vienna.
• B. Leopold IV, Margrave of Austria
  Leopold IV, Margrave of Austria was a 12th-century Babenberg ruler who significantly expanded and consolidated Austrian territories within the Holy Roman Empire.
• C. Saint Leopold III, Margrave of Austria
  Saint Leopold III, Margrave of Austria, was an 11th–12th century Babenberg ruler venerated as a patron saint of Austria, renowned for his piety, just governance, and role in consolidating and developing the early Austrian margraviate.
• D. Rudolf IV, Duke of Austria
  Rudolf IV, Duke of Austria, was a 14th-century Habsburg ruler known for his ambitious state-building policies and cultural patronage, including major architectural projects in Vienna and efforts to elevate the status of his dynasty.
• E. Leopold I, Margrave of Austria
  Leopold I, Margrave of Austria was a 10th–11th century Babenberg ruler who established the early medieval Austrian march and laid the foundations for the later Duchy of Austria.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.