Question: when did the first episode of regular show air
[{'answer': 'September 6 , 2010', 'provenance': [{'wikipedia_id': '24553901', 'title': 'Regular Show', 'start_paragraph_id': 28, 'start_character': 211, 'end_paragraph_id': 28, 'end_character': 229, 'bleu_score': 1.0, 'section': 'Section::::Episodes.\n'}]}, {'provenance': [{'wikipedia_id': '24553901', 'title': 'Regular Show', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 647, 'bleu_score': 0.8145517102491371, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1167546074430187528}, 'section': 'Section::::Abstract.'}]}]