Question: when did the first episode of american dad air
[{'answer': 'February 6 , 2005', 'provenance': [{'wikipedia_id': '908663', 'title': 'American Dad!', 'start_paragraph_id': 96, 'start_character': 422, 'end_paragraph_id': 96, 'end_character': 439, 'bleu_score': 1.0, 'section': 'Section::::Reception.:Series premiere.\n'}]}, {'provenance': [{'wikipedia_id': '908663', 'title': 'American Dad!', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 424, 'bleu_score': 0.9204199807826591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8171310505916380778}, 'section': 'Section::::Abstract.'}]}]