Question: when did the first episode of breaking bad air
[{'answer': 'January 20 , 2008', 'provenance': [{'wikipedia_id': '15465618', 'title': 'Pilot (Breaking Bad)', 'start_paragraph_id': 1, 'start_character': 187, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '15465618', 'title': 'Pilot (Breaking Bad)', 'start_paragraph_id': 1, 'start_character': 9, 'end_paragraph_id': 1, 'end_character': 281, 'bleu_score': 0.8597216076754871, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4957877945223521858}, 'section': 'Section::::Abstract.'}]}]