Question: when was the last time mount cameroon erupted
[{'answer': 'February 3 , 2012', 'provenance': [{'wikipedia_id': '515426', 'title': 'Mount Cameroon', 'start_paragraph_id': 2, 'start_character': 191, 'end_paragraph_id': 2, 'end_character': 208, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '515426', 'title': 'Mount Cameroon', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 207, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10645093329054314104}, 'section': 'Section::::Abstract.'}]}]