Question: what started the waldo canyon fire in colorado
[{'answer': 'a brush fire', 'provenance': [{'wikipedia_id': '36242146', 'title': 'Waldo Canyon Fire', 'start_paragraph_id': 4, 'start_character': 33, 'end_paragraph_id': 4, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::The fire.:Beginning.\n'}]}, {'provenance': [{'wikipedia_id': '36242146', 'title': 'Waldo Canyon Fire', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1072, 'bleu_score': 0.9424120430615621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14047749329497093259}, 'section': 'Section::::The fire.:Beginning.\n'}]}]