Question: when was the ebola outbreak in sierra leone
[{'answer': '2014', 'provenance': [{'wikipedia_id': '43955674', 'title': 'Ebola virus epidemic in Sierra Leone', 'start_paragraph_id': 1, 'start_character': 52, 'end_paragraph_id': 1, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43955674', 'title': 'Ebola virus epidemic in Sierra Leone', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 586, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8003600986481971627}, 'section': 'Section::::Abstract.'}]}]