Question: when did the republic of ireland leave the commonwealth
[{'answer': '18 April 1949', 'provenance': [{'wikipedia_id': '1626926', 'title': 'Ireland Act 1949', 'start_paragraph_id': 6, 'start_character': 658, 'end_paragraph_id': 6, 'end_character': 671, 'bleu_score': 1.0, 'section': 'Section::::Background.\n'}]}, {'provenance': [{'wikipedia_id': '1626926', 'title': 'Ireland Act 1949', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 1017, 'bleu_score': 0.9733831041780681, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6665237574167153570}, 'section': 'Section::::Background.\n'}]}]