Question: when did the war start in sierra leone
[{'answer': '23 March 1991', 'provenance': [{'wikipedia_id': '2477816', 'title': 'Sierra Leone Civil War', 'start_paragraph_id': 1, 'start_character': 48, 'end_paragraph_id': 1, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2477816', 'title': 'Sierra Leone Civil War', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 378, 'bleu_score': 0.9114434865990401, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8175389101027094483}, 'section': 'Section::::Abstract.'}]}]