Question: when did the civil war in colombia start
[{'answer': 'the mid-1960s', 'provenance': [{'wikipedia_id': '1857628', 'title': 'Colombian conflict', 'start_paragraph_id': 1, 'start_character': 32, 'end_paragraph_id': 1, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1857628', 'title': 'Colombian conflict', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 496, 'bleu_score': 0.70532718589578, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11155529066005511739}, 'section': 'Section::::Abstract.'}]}]