Question: when did pawn stars first air on tv
[{'answer': 'July 26 , 2009', 'provenance': [{'wikipedia_id': '23844652', 'title': 'Pawn Stars', 'start_paragraph_id': 1, 'start_character': 578, 'end_paragraph_id': 1, 'end_character': 592, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23844652', 'title': 'Pawn Stars', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 591, 'bleu_score': 0.943950247594541, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13799463442338510721}, 'section': 'Section::::Abstract.'}]}]