Question: Which mythical character from medieval legend because popular during the era of Romantic nationalism and has a core unit of the Lithuanian Army name inspired by him?
{'answer': 'Iron Wolf', 'supporting_facts': [['Mechanised Infantry Brigade Iron Wolf', 0], ['Mechanised Infantry Brigade Iron Wolf', 1], ['Iron Wolf (character)', 0], ['Iron Wolf (character)', 2], ['Iron Wolf (character)', 3]]}