Question: Mexican general, Gregorio Ruiz, fought against the ensuing empire of the younger brother of the Austrian emperor Francis Joseph I, the only what of the Second Mexican Empire?
{'answer': 'monarch', 'supporting_facts': [['Gregorio Ruiz', 0], ['Gregorio Ruiz', 3], ['Maximilian I of Mexico', 0], ['Maximilian I of Mexico', 1]]}