Question: the first monarch to rule a united crown of aragon was
[{'answer': 'Petronilla', 'provenance': [{'wikipedia_id': '824490', 'title': 'Crown of Aragon', 'start_paragraph_id': 11, 'start_character': 218, 'end_paragraph_id': 11, 'end_character': 228, 'bleu_score': 1.0, 'section': 'Section::::Context.:Origin.\n'}]}]