Question: when did the irish free state become a republic
[{'answer': '1949', 'provenance': [{'wikipedia_id': '230781', 'title': 'History of the Republic of Ireland', 'start_paragraph_id': 1, 'start_character': 284, 'end_paragraph_id': 1, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '230781', 'title': 'History of the Republic of Ireland', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 488, 'bleu_score': 0.8540340379770951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13472272691723140858}, 'section': 'Section::::Abstract.'}]}]