Question: when was the first ever zumba instructor training conducted
[{'answer': '2005', 'provenance': [{'wikipedia_id': '25228183', 'title': 'Zumba', 'start_paragraph_id': 30, 'start_character': 3, 'end_paragraph_id': 30, 'end_character': 7, 'bleu_score': 1.0, 'section': 'Section::::Products.\n'}]}, {'provenance': [{'wikipedia_id': '25228183', 'title': 'Zumba', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 89, 'bleu_score': 0.861173529963367, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8880807789754999562}, 'section': 'Section::::Products.\n'}]}]